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380938368 = 2731138779
BaseRepresentation
bin10110101101001…
…010100010000000
3222112210200012110
4112231022202000
51240010011433
6101444455320
712303631326
oct2655124200
9875720173
10380938368
111860366a8
12a76aa540
1360bc9325
1438841d16
152369a963
hex16b4a880

380938368 has 64 divisors (see below), whose sum is σ = 1020938400. Its totient is φ = 125841408.

The previous prime is 380938361. The next prime is 380938379. The reversal of 380938368 is 863839083.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×3809383682 = 290228080429006848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (380938361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39003 + ... + 47781.

Almost surely, 2380938368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380938368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510469200).

380938368 is an abundant number, since it is smaller than the sum of its proper divisors (640000032).

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

380938368 is a wasteful number, since it uses less digits than its factorization.

380938368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8909 (or 8897 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 380938368 is about 19517.6424805866. The cubic root of 380938368 is about 724.9113600708.

The spelling of 380938368 in words is "three hundred eighty million, nine hundred thirty-eight thousand, three hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 113 128 192 226 339 384 452 678 904 1356 1808 2712 3616 5424 7232 8779 10848 14464 17558 21696 26337 35116 43392 52674 70232 105348 140464 210696 280928 421392 561856 842784 992027 1123712 1685568 1984054 2976081 3371136 3968108 5952162 7936216 11904324 15872432 23808648 31744864 47617296 63489728 95234592 126979456 190469184 380938368