157431078 has 48 divisors (see below), whose sum is σ = 400377120. Its totient is φ = 43763328.

The previous prime is 157431077. The next prime is 157431119. The reversal of 157431078 is 870134751.

157431078 is a `hidden beast` number, since 1 + 574 + 3 + 10 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157431077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12223 + ... + 21546.

It is an arithmetic number, because the mean of its divisors is an integer number (8341190).

Almost surely, 2^157431078 is an apocalyptic number.

157431078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157431078 is an abundant number, since it is smaller than the sum of its proper divisors (242946042).

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

157431078 is a wasteful number, since it uses less digits than its factorization.

157431078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33821 (or 33818 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 157431078 is about 12547.1541793349. The cubic root of 157431078 is about 539.9623636321.

The spelling of 157431078 in words is "one hundred fifty-seven million, four hundred thirty-one thousand, seventy-eight".