72618532 has 24 divisors (see below), whose sum is σ = 152882240. Its totient is φ = 29484000.

The previous prime is 72618517. The next prime is 72618541. The reversal of 72618532 is 23581627.

It is a happy 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, 67719 + ... + 68782.

Almost surely, 2^72618532 is an apocalyptic number.

It is an amenable number.

72618532 is an abundant number, since it is smaller than the sum of its proper divisors (80263708).

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

72618532 is a wasteful number, since it uses less digits than its factorization.

72618532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136531 (or 136529 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 72618532 is about 8521.6507790451. The cubic root of 72618532 is about 417.2046642594.

The spelling of 72618532 in words is "seventy-two million, six hundred eighteen thousand, five hundred thirty-two".