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388750068 = 223278211879
BaseRepresentation
bin10111001010111…
…101101011110100
31000002111112211200
4113022331223310
51244010000233
6102324132500
712430215060
oct2712755364
91002445750
10388750068
1118a491753
12aa237130
1362702b35
14398b6aa0
15241e0313
hex172bdaf4

388750068 has 72 divisors (see below), whose sum is σ = 1125022080. Its totient is φ = 110877120.

The previous prime is 388750049. The next prime is 388750091. The reversal of 388750068 is 860057883.

388750068 is a `hidden beast` number, since 3 + 8 + 87 + 500 + 68 = 666.

It is a super-2 number, since 2×3887500682 = 302253230740009248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205953 + ... + 207831.

Almost surely, 2388750068 is an apocalyptic number.

It is an amenable number.

388750068 is an abundant number, since it is smaller than the sum of its proper divisors (736272012).

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

388750068 is a wasteful number, since it uses less digits than its factorization.

388750068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2712 counting only the distinct ones).

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

The square root of 388750068 is about 19716.7458775529. The cubic root of 388750068 is about 729.8329936343.

The spelling of 388750068 in words is "three hundred eighty-eight million, seven hundred fifty thousand, sixty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 821 1642 1879 2463 3284 3758 4926 5637 5747 7389 7516 9852 11274 11494 13153 14778 16911 17241 22548 22988 26306 29556 33822 34482 39459 51723 52612 67644 68964 78918 103446 118377 157836 206892 236754 473508 1542659 3085318 4627977 6170636 9255954 10798613 13883931 18511908 21597226 27767862 32395839 43194452 55535724 64791678 97187517 129583356 194375034 388750068