72282464 has 12 divisors (see below), whose sum is σ = 142306164. Its totient is φ = 36141216.

The previous prime is 72282451. The next prime is 72282503. The reversal of 72282464 is 46428227.

It is a happy number.

It is a super-2 number, since 2×72282464² = 10449509203822592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129382 + ... + 1129445.

It is an arithmetic number, because the mean of its divisors is an integer number (11858847).

Almost surely, 2^72282464 is an apocalyptic number.

It is an amenable number.

72282464 is a deficient number, since it is larger than the sum of its proper divisors (70023700).

72282464 is a wasteful number, since it uses less digits than its factorization.

72282464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258837 (or 2258829 counting only the distinct ones).

The product of its digits is 43008, while the sum is 35.

The square root of 72282464 is about 8501.9094325922. The cubic root of 72282464 is about 416.5600813951.

The spelling of 72282464 in words is "seventy-two million, two hundred eighty-two thousand, four hundred sixty-four".