157101720 has 32 divisors (see below), whose sum is σ = 471305520. Its totient is φ = 41893760.

The previous prime is 157101689. The next prime is 157101731. The reversal of 157101720 is 27101751.

It is a happy number.

157101720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 654471 + ... + 654710.

Almost surely, 2^157101720 is an apocalyptic number.

157101720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157101720 is an abundant number, since it is smaller than the sum of its proper divisors (314203800).

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

157101720 is a wasteful number, since it uses less digits than its factorization.

157101720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309195 (or 1309191 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 157101720 is about 12534.0224987831. The cubic root of 157101720 is about 539.5855530519.

The spelling of 157101720 in words is "one hundred fifty-seven million, one hundred one thousand, seven hundred twenty".