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157156188 = 22371870907
BaseRepresentation
bin10010101111000…
…00001101011100
3101221201100202120
421113200031130
5310212444223
623332222540
73615543210
oct1127401534
9357640676
10157156188
118078a852
124476aa50
1326736237
1416c2c940
15dbe4be3
hex95e035c

157156188 has 24 divisors (see below), whose sum is σ = 419083392. Its totient is φ = 44901744.

The previous prime is 157156187. The next prime is 157156189. The reversal of 157156188 is 881651751.

157156188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (157156187) and next prime (157156189).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157156187) 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 7 ways as a sum of consecutive naturals, for example, 935370 + ... + 935537.

It is an arithmetic number, because the mean of its divisors is an integer number (17461808).

Almost surely, 2157156188 is an apocalyptic number.

It is an amenable number.

157156188 is an abundant number, since it is smaller than the sum of its proper divisors (261927204).

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

157156188 is a wasteful number, since it uses less digits than its factorization.

157156188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870921 (or 1870919 counting only the distinct ones).

The product of its digits is 67200, while the sum is 42.

The square root of 157156188 is about 12536.1951165415. The cubic root of 157156188 is about 539.6479049048.

The spelling of 157156188 in words is "one hundred fifty-seven million, one hundred fifty-six thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 1870907 3741814 5612721 7483628 11225442 13096349 22450884 26192698 39289047 52385396 78578094 157156188