157389312 has 80 divisors (see below), whose sum is σ = 441444960. Its totient is φ = 49692672.

The previous prime is 157389311. The next prime is 157389313. The reversal of 157389312 is 213983751.

It is an interprime number because it is at equal distance from previous prime (157389311) and next prime (157389313).

It is not an unprimeable number, because it can be changed into a prime (157389311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26488 + ... + 31880.

It is an arithmetic number, because the mean of its divisors is an integer number (5518062).

Almost surely, 2^157389312 is an apocalyptic number.

157389312 is a gapful number since it is divisible by the number (12) 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 157389312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220722480).

157389312 is an abundant number, since it is smaller than the sum of its proper divisors (284055648).

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

157389312 is an equidigital number, since it uses as much as digits as its factorization.

157389312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5433 (or 5417 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 157389312 is about 12545.4897074606. The cubic root of 157389312 is about 539.9146092687.

The spelling of 157389312 in words is "one hundred fifty-seven million, three hundred eighty-nine thousand, three hundred twelve".