157471720 has 32 divisors (see below), whose sum is σ = 404928000. Its totient is φ = 53990208.

The previous prime is 157471679. The next prime is 157471733. The reversal of 157471720 is 27174751.

157471720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280920 + ... + 281479.

It is an arithmetic number, because the mean of its divisors is an integer number (12654000).

Almost surely, 2^157471720 is an apocalyptic number.

157471720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157471720 is an abundant number, since it is smaller than the sum of its proper divisors (247456280).

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

157471720 is a wasteful number, since it uses less digits than its factorization.

157471720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562417 (or 562413 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 157471720 is about 12548.7736452611. The cubic root of 157471720 is about 540.0088247300.

The spelling of 157471720 in words is "one hundred fifty-seven million, four hundred seventy-one thousand, seven hundred twenty".