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157216108 = 22731937163
BaseRepresentation
bin10010101111011…
…10110101101100
3101221211101221211
421113232311230
5310221403413
623333404204
73616213000
oct1127566554
9357741854
10157216108
1180820875
1244799664
13267575aa
1416c46700
15dc0783d
hex95eed6c

157216108 has 96 divisors (see below), whose sum is σ = 348992000. Its totient is φ = 61725888.

The previous prime is 157216091. The next prime is 157216121. The reversal of 157216108 is 801612751.

It is a super-2 number, since 2×1572161082 = 49433809229335328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157216108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 964435 + ... + 964597.

Almost surely, 2157216108 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 157216108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174496000).

157216108 is an abundant number, since it is smaller than the sum of its proper divisors (191775892).

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

157216108 is a wasteful number, since it uses less digits than its factorization.

157216108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 157216108 is about 12538.5847686252. The cubic root of 157216108 is about 539.7164812557.

Adding to 157216108 its reverse (801612751), we get a palindrome (958828859).

The spelling of 157216108 in words is "one hundred fifty-seven million, two hundred sixteen thousand, one hundred eight".

Divisors: 1 2 4 7 14 19 28 37 38 49 74 76 98 133 148 163 196 259 266 326 343 518 532 652 686 703 931 1036 1141 1372 1406 1813 1862 2282 2812 3097 3626 3724 4564 4921 6031 6194 6517 7252 7987 9842 12062 12388 12691 13034 15974 19684 21679 24124 25382 26068 31948 34447 42217 43358 50764 55909 68894 84434 86716 111818 114589 137788 151753 168868 223636 229178 241129 295519 303506 458356 482258 591038 607012 802123 964516 1062271 1182076 1604246 2068633 2124542 3208492 4137266 4249084 5614861 8274532 11229722 22459444 39304027 78608054 157216108