72464678 has 32 divisors (see below), whose sum is σ = 132118560. Its totient is φ = 29352960.

The previous prime is 72464669. The next prime is 72464681. The reversal of 72464678 is 87646427.

It is a super-2 number, since 2×72464678² = 10502259115287368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3926 + ... + 12662.

It is an arithmetic number, because the mean of its divisors is an integer number (4128705).

Almost surely, 2^72464678 is an apocalyptic number.

72464678 is a deficient number, since it is larger than the sum of its proper divisors (59653882).

72464678 is a wasteful number, since it uses less digits than its factorization.

72464678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8792.

The product of its digits is 451584, while the sum is 44.

The square root of 72464678 is about 8512.6187510072. The cubic root of 72464678 is about 416.9098176165.

The spelling of 72464678 in words is "seventy-two million, four hundred sixty-four thousand, six hundred seventy-eight".