157157388 has 48 divisors (see below), whose sum is σ = 408142560. Its totient is φ = 52296192.

The previous prime is 157157381. The next prime is 157157423. The reversal of 157157388 is 883751751.

157157388 is a `hidden beast` number, since 1 + 5 + 71 + 573 + 8 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (157157381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100420 + ... + 101972.

It is an arithmetic number, because the mean of its divisors is an integer number (8502970).

Almost surely, 2^157157388 is an apocalyptic number.

157157388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

157157388 is an abundant number, since it is smaller than the sum of its proper divisors (250985172).

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

157157388 is a wasteful number, since it uses less digits than its factorization.

157157388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503 (or 2495 counting only the distinct ones).

The product of its digits is 235200, while the sum is 45.

The square root of 157157388 is about 12536.2429778622. The cubic root of 157157388 is about 539.6492784340.

The spelling of 157157388 in words is "one hundred fifty-seven million, one hundred fifty-seven thousand, three hundred eighty-eight".