157239628 has 108 divisors (see below), whose sum is σ = 357491232. Its totient is φ = 60278400.

The previous prime is 157239623. The next prime is 157239629. The reversal of 157239628 is 826932751.

157239628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×157239628² = 49448601227156768, which contains 22 as substring.

Its product of digits (181440) is a multiple of the sum of its prime factors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157239623) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1556778 + ... + 1556878.

It is an arithmetic number, because the mean of its divisors is an integer number (3310104).

Almost surely, 2^157239628 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 157239628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178745616).

157239628 is an abundant number, since it is smaller than the sum of its proper divisors (200251604).

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

157239628 is a wasteful number, since it uses less digits than its factorization.

157239628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 170 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 157239628 is about 12539.5226384420. The cubic root of 157239628 is about 539.7433943137.

The spelling of 157239628 in words is "one hundred fifty-seven million, two hundred thirty-nine thousand, six hundred twenty-eight".