78412732 has 12 divisors (see below), whose sum is σ = 140142240. Its totient is φ = 38372096.

The previous prime is 78412717. The next prime is 78412751. The reversal of 78412732 is 23721487.

It is a super-2 number, since 2×78412732² = 12297113079407648, 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 in 3 ways as a sum of consecutive naturals, for example, 208357 + ... + 208732.

It is an arithmetic number, because the mean of its divisors is an integer number (11678520).

Almost surely, 2^78412732 is an apocalyptic number.

It is an amenable number.

78412732 is a deficient number, since it is larger than the sum of its proper divisors (61729508).

78412732 is a wasteful number, since it uses less digits than its factorization.

78412732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417140 (or 417138 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 78412732 is about 8855.0963856979. The cubic root of 78412732 is about 428.0181594764.

The spelling of 78412732 in words is "seventy-eight million, four hundred twelve thousand, seven hundred thirty-two".