157830732 has 18 divisors (see below), whose sum is σ = 398961108. Its totient is φ = 52610232.

The previous prime is 157830727. The next prime is 157830773. The reversal of 157830732 is 237038751.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4384187 = 157830732 / (1 + 5 + 7 + 8 + 3 + 0 + 7 + 3 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2192058 + ... + 2192129.

It is an arithmetic number, because the mean of its divisors is an integer number (22164506).

Almost surely, 2^157830732 is an apocalyptic number.

157830732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157830732 is an abundant number, since it is smaller than the sum of its proper divisors (241130376).

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

157830732 is a wasteful number, since it uses less digits than its factorization.

157830732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384197 (or 4384192 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 157830732 is about 12563.0701661656. The cubic root of 157830732 is about 540.4188930759.

The spelling of 157830732 in words is "one hundred fifty-seven million, eight hundred thirty thousand, seven hundred thirty-two".