72464688 has 30 divisors (see below), whose sum is σ = 202800884. Its totient is φ = 24154848.

The previous prime is 72464681. The next prime is 72464699. The reversal of 72464688 is 88646427.

It is a super-2 number, since 2×72464688² = 10502262013874688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72464681) 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 5 ways as a sum of consecutive naturals, for example, 251470 + ... + 251757.

Almost surely, 2^72464688 is an apocalyptic number.

It is an amenable number.

72464688 is an abundant number, since it is smaller than the sum of its proper divisors (130336196).

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

72464688 is a wasteful number, since it uses less digits than its factorization.

72464688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503241 (or 503232 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 72464688 is about 8512.6193383705. The cubic root of 72464688 is about 416.9098367941.

The spelling of 72464688 in words is "seventy-two million, four hundred sixty-four thousand, six hundred eighty-eight".