157117872 has 40 divisors (see below), whose sum is σ = 415332544. Its totient is φ = 51153984.

The previous prime is 157117847. The next prime is 157117879. The reversal of 157117872 is 278711751.

It is a self number, because there is not a number n which added to its sum of digits gives 157117872.

It is not an unprimeable number, because it can be changed into a prime (157117879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35998 + ... + 40125.

Almost surely, 2^157117872 is an apocalyptic number.

157117872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157117872 is an abundant number, since it is smaller than the sum of its proper divisors (258214672).

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

157117872 is a wasteful number, since it uses less digits than its factorization.

157117872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76177 (or 76171 counting only the distinct ones).

The product of its digits is 27440, while the sum is 39.

The square root of 157117872 is about 12534.6668084955. Note that the first 3 decimals coincide. The cubic root of 157117872 is about 539.6040444412.

The spelling of 157117872 in words is "one hundred fifty-seven million, one hundred seventeen thousand, eight hundred seventy-two".