157188020 has 48 divisors (see below), whose sum is σ = 360956736. Its totient is φ = 57024000.

The previous prime is 157188013. The next prime is 157188023. The reversal of 157188020 is 20881751.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157188023) 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, 177980 + ... + 178860.

It is an arithmetic number, because the mean of its divisors is an integer number (7519932).

Almost surely, 2^157188020 is an apocalyptic number.

157188020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157188020 is an abundant number, since it is smaller than the sum of its proper divisors (203768716).

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

157188020 is a wasteful number, since it uses less digits than its factorization.

157188020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 157188020 is about 12537.4646559821. The cubic root of 157188020 is about 539.6843376889.

The spelling of 157188020 in words is "one hundred fifty-seven million, one hundred eighty-eight thousand, twenty".