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380938896 = 243313292339
BaseRepresentation
bin10110101101001…
…010101010010000
3222112210200221000
4112231022222100
51240010021041
6101444502000
712303633012
oct2655125220
9875720830
10380938896
11186037038
12a76aa900
1360bc9640
14388421b2
152369abb6
hex16b4aa90

380938896 has 160 divisors (see below), whose sum is σ = 1218672000. Its totient is φ = 113121792.

The previous prime is 380938879. The next prime is 380938897. The reversal of 380938896 is 698839083.

It is a super-2 number, since 2×3809388962 = 290228884971397632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380938897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161695 + ... + 164033.

It is an arithmetic number, because the mean of its divisors is an integer number (7616700).

Almost surely, 2380938896 is an apocalyptic number.

380938896 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380938896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609336000).

380938896 is an abundant number, since it is smaller than the sum of its proper divisors (837733104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

380938896 is a wasteful number, since it uses less digits than its factorization.

380938896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 380938896 is about 19517.6560068057. The cubic root of 380938896 is about 724.9116949920.

The spelling of 380938896 in words is "three hundred eighty million, nine hundred thirty-eight thousand, eight hundred ninety-six".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 27 29 36 39 48 52 54 58 72 78 87 104 108 116 117 144 156 174 208 216 232 234 261 312 348 351 377 432 464 468 522 624 696 702 754 783 936 1044 1131 1392 1404 1508 1566 1872 2088 2262 2339 2808 3016 3132 3393 4176 4524 4678 5616 6032 6264 6786 7017 9048 9356 10179 12528 13572 14034 18096 18712 20358 21051 27144 28068 30407 37424 40716 42102 54288 56136 60814 63153 67831 81432 84204 91221 112272 121628 126306 135662 162864 168408 182442 203493 243256 252612 271324 273663 336816 364884 406986 486512 505224 542648 547326 610479 729768 813972 820989 881803 1010448 1085296 1094652 1220958 1459536 1627944 1641978 1763606 1831437 2189304 2441916 2645409 3255888 3283956 3527212 3662874 4378608 4883832 5290818 6567912 7054424 7325748 7936227 9767664 10581636 13135824 14108848 14651496 15872454 21163272 23808681 29302992 31744908 42326544 47617362 63489816 95234724 126979632 190469448 380938896