72157560 has 32 divisors (see below), whose sum is σ = 216473040. Its totient is φ = 19241984.

The previous prime is 72157559. The next prime is 72157567. The reversal of 72157560 is 6575127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72157567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300537 + ... + 300776.

Almost surely, 2^72157560 is an apocalyptic number.

It is an amenable number.

72157560 is an abundant number, since it is smaller than the sum of its proper divisors (144315480).

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

72157560 is a wasteful number, since it uses less digits than its factorization.

72157560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601327 (or 601323 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 72157560 is about 8494.5606125332. The cubic root of 72157560 is about 416.3200046388.

The spelling of 72157560 in words is "seventy-two million, one hundred fifty-seven thousand, five hundred sixty".