157865730 has 64 divisors (see below), whose sum is σ = 415324800. Its totient is φ = 38085120.

The previous prime is 157865713. The next prime is 157865749. The reversal of 157865730 is 37568751.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74526 + ... + 76614.

It is an arithmetic number, because the mean of its divisors is an integer number (6489450).

Almost surely, 2^157865730 is an apocalyptic number.

157865730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157865730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207662400).

157865730 is an abundant number, since it is smaller than the sum of its proper divisors (257459070).

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

157865730 is a wasteful number, since it uses less digits than its factorization.

157865730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339.

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 157865730 is about 12564.4629809634. The cubic root of 157865730 is about 540.4588349858.

The spelling of 157865730 in words is "one hundred fifty-seven million, eight hundred sixty-five thousand, seven hundred thirty".