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385007868 = 2232719191421
BaseRepresentation
bin10110111100101…
…100000011111100
3222211110102111200
4112330230003330
51242030222433
6102112015500
712353340630
oct2674540374
9884412450
10385007868
11188366123
12a8b31590
13619c270b
14391c0dc0
1523c01613
hex16f2c0fc

385007868 has 144 divisors (see below), whose sum is σ = 1179709440. Its totient is φ = 103420800.

The previous prime is 385007851. The next prime is 385007873. The reversal of 385007868 is 868700583.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 914298 + ... + 914718.

Almost surely, 2385007868 is an apocalyptic number.

385007868 is a gapful number since it is divisible by the number (38) 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 385007868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589854720).

385007868 is an abundant number, since it is smaller than the sum of its proper divisors (794701572).

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

385007868 is a wasteful number, since it uses less digits than its factorization.

385007868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 385007868 is about 19621.6173645294. The cubic root of 385007868 is about 727.4835905180.

The spelling of 385007868 in words is "three hundred eighty-five million, seven thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 19 21 28 36 38 42 57 63 76 84 114 126 133 171 191 228 252 266 342 382 399 421 532 573 684 764 798 842 1146 1197 1263 1337 1596 1684 1719 2292 2394 2526 2674 2947 3438 3629 3789 4011 4788 5052 5348 5894 6876 7258 7578 7999 8022 8841 10887 11788 12033 14516 15156 15998 16044 17682 21774 23997 24066 25403 26523 31996 32661 35364 43548 47994 48132 50806 53046 55993 65322 71991 76209 80411 95988 101612 106092 111986 130644 143982 152418 160822 167979 223972 228627 241233 287964 304836 321644 335958 457254 482466 503937 562877 671916 723699 914508 964932 1007874 1125754 1447398 1527809 1688631 2015748 2251508 2894796 3055618 3377262 4583427 5065893 6111236 6754524 9166854 10131786 10694663 13750281 18333708 20263572 21389326 27500562 32083989 42778652 55001124 64167978 96251967 128335956 192503934 385007868