72529656 has 32 divisors (see below), whose sum is σ = 185749200. Its totient is φ = 23586560.

The previous prime is 72529651. The next prime is 72529693. The reversal of 72529656 is 65692527.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72529651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35871 + ... + 37838.

Almost surely, 2^72529656 is an apocalyptic number.

It is an amenable number.

72529656 is an abundant number, since it is smaller than the sum of its proper divisors (113219544).

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

72529656 is a wasteful number, since it uses less digits than its factorization.

72529656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73759 (or 73755 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 72529656 is about 8516.4344651973. The cubic root of 72529656 is about 417.0343926685.

It can be divided in two parts, 725 and 29656, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 72529656 in words is "seventy-two million, five hundred twenty-nine thousand, six hundred fifty-six".