72426864 has 20 divisors (see below), whose sum is σ = 187102856. Its totient is φ = 24142272.

The previous prime is 72426863. The next prime is 72426883. The reversal of 72426864 is 46862427.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72426863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754399 + ... + 754494.

Almost surely, 2^72426864 is an apocalyptic number.

It is an amenable number.

72426864 is an abundant number, since it is smaller than the sum of its proper divisors (114675992).

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

72426864 is a wasteful number, since it uses less digits than its factorization.

72426864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508904 (or 1508898 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 72426864 is about 8510.3974055270. The cubic root of 72426864 is about 416.8372867813.

The spelling of 72426864 in words is "seventy-two million, four hundred twenty-six thousand, eight hundred sixty-four".