157305732 has 12 divisors (see below), whose sum is σ = 367046736. Its totient is φ = 52435240.

The previous prime is 157305727. The next prime is 157305781. The reversal of 157305732 is 237503751.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 157305693 and 157305702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6554394 + ... + 6554417.

It is an arithmetic number, because the mean of its divisors is an integer number (30587228).

Almost surely, 2^157305732 is an apocalyptic number.

157305732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157305732 is an abundant number, since it is smaller than the sum of its proper divisors (209741004).

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

157305732 is a wasteful number, since it uses less digits than its factorization.

157305732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13108818 (or 13108816 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 33.

The square root of 157305732 is about 12542.1581874891. The cubic root of 157305732 is about 539.8190202846.

The spelling of 157305732 in words is "one hundred fifty-seven million, three hundred five thousand, seven hundred thirty-two".