157831432 has 48 divisors (see below), whose sum is σ = 328648320. Its totient is φ = 71000160.

The previous prime is 157831397. The next prime is 157831439. The reversal of 157831432 is 234138751.

It is not an unprimeable number, because it can be changed into a prime (157831439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98913 + ... + 100495.

It is an arithmetic number, because the mean of its divisors is an integer number (6846840).

Almost surely, 2^157831432 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 157831432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164324160).

157831432 is an abundant number, since it is smaller than the sum of its proper divisors (170816888).

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

157831432 is a wasteful number, since it uses less digits than its factorization.

157831432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1699 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 157831432 is about 12563.0980255668. The cubic root of 157831432 is about 540.4196920176.

The spelling of 157831432 in words is "one hundred fifty-seven million, eight hundred thirty-one thousand, four hundred thirty-two".