157311420 has 192 divisors, whose sum is σ = 529514496. Its totient is φ = 34145280.

The previous prime is 157311419. The next prime is 157311433. The reversal of 157311420 is 24113751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 823525 + ... + 823715.

It is an arithmetic number, because the mean of its divisors is an integer number (2757888).

Almost surely, 2^157311420 is an apocalyptic number.

157311420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157311420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264757248).

157311420 is an abundant number, since it is smaller than the sum of its proper divisors (372203076).

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

157311420 is a wasteful number, since it uses less digits than its factorization.

157311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 157311420 is about 12542.3849406722. The cubic root of 157311420 is about 539.8255266243.

The spelling of 157311420 in words is "one hundred fifty-seven million, three hundred eleven thousand, four hundred twenty".