72478986 has 16 divisors (see below), whose sum is σ = 145104384. Its totient is φ = 24135264.

The previous prime is 72478949. The next prime is 72478993. The reversal of 72478986 is 68987427.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 966 + ... + 12078.

It is an arithmetic number, because the mean of its divisors is an integer number (9069024).

Almost surely, 2^72478986 is an apocalyptic number.

72478986 is an abundant number, since it is smaller than the sum of its proper divisors (72625398).

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

72478986 is a wasteful number, since it uses less digits than its factorization.

72478986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12205.

The product of its digits is 1354752, while the sum is 51.

The square root of 72478986 is about 8513.4591089639. The cubic root of 72478986 is about 416.9372551363.

The spelling of 72478986 in words is "seventy-two million, four hundred seventy-eight thousand, nine hundred eighty-six".