157423128 has 64 divisors (see below), whose sum is σ = 418698720. Its totient is φ = 49152000.

The previous prime is 157423061. The next prime is 157423139. The reversal of 157423128 is 821324751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97528 + ... + 99128.

Almost surely, 2^157423128 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 157423128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209349360).

157423128 is an abundant number, since it is smaller than the sum of its proper divisors (261275592).

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

157423128 is a wasteful number, since it uses less digits than its factorization.

157423128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1864 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 157423128 is about 12546.8373704293. The cubic root of 157423128 is about 539.9532744207.

Adding to 157423128 its reverse (821324751), we get a palindrome (978747879).

The spelling of 157423128 in words is "one hundred fifty-seven million, four hundred twenty-three thousand, one hundred twenty-eight".