157172430 has 16 divisors (see below), whose sum is σ = 377213904. Its totient is φ = 41912640.

The previous prime is 157172381. The next prime is 157172447. The reversal of 157172430 is 34271751.

157172430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 5239081 = 157172430 / (1 + 5 + 7 + 1 + 7 + 2 + 4 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2619511 + ... + 2619570.

It is an arithmetic number, because the mean of its divisors is an integer number (23575869).

Almost surely, 2^157172430 is an apocalyptic number.

157172430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157172430 is an abundant number, since it is smaller than the sum of its proper divisors (220041474).

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

157172430 is a wasteful number, since it uses less digits than its factorization.

157172430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239091.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 157172430 is about 12536.8429040169. The cubic root of 157172430 is about 539.6664950294. Note that the first 3 decimals are identical.

The spelling of 157172430 in words is "one hundred fifty-seven million, one hundred seventy-two thousand, four hundred thirty".