72476978 has 24 divisors (see below), whose sum is σ = 126918252. Its totient is φ = 30950304.

The previous prime is 72476959. The next prime is 72476993. The reversal of 72476978 is 87967427.

It can be written as a sum of positive squares in 2 ways, for example, as 63792169 + 8684809 = 7987^2 + 2947^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29900 + ... + 32232.

Almost surely, 2^72476978 is an apocalyptic number.

72476978 is a deficient number, since it is larger than the sum of its proper divisors (54441274).

72476978 is a wasteful number, since it uses less digits than its factorization.

72476978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666 (or 2659 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 72476978 is about 8513.3411772347. The cubic root of 72476978 is about 416.9334047433.

The spelling of 72476978 in words is "seventy-two million, four hundred seventy-six thousand, nine hundred seventy-eight".