157017620 has 12 divisors (see below), whose sum is σ = 329737044. Its totient is φ = 62807040.

The previous prime is 157017617. The next prime is 157017673. The reversal of 157017620 is 26710751.

157017620 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29463184 + 127554436 = 5428^2 + 11294^2 .

157017620 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3925421 + ... + 3925460.

It is an arithmetic number, because the mean of its divisors is an integer number (27478087).

Almost surely, 2^157017620 is an apocalyptic number.

157017620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157017620 is an abundant number, since it is smaller than the sum of its proper divisors (172719424).

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

157017620 is a wasteful number, since it uses less digits than its factorization.

157017620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850890 (or 7850888 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 157017620 is about 12530.6671809605. The cubic root of 157017620 is about 539.4892518680.

The spelling of 157017620 in words is "one hundred fifty-seven million, seventeen thousand, six hundred twenty".