78436924 has 12 divisors (see below), whose sum is σ = 137327400. Its totient is φ = 39200528.

The previous prime is 78436907. The next prime is 78436927. The reversal of 78436924 is 42963487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78436927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12522 + ... + 17710.

It is an arithmetic number, because the mean of its divisors is an integer number (11443950).

Almost surely, 2^78436924 is an apocalyptic number.

It is an amenable number.

78436924 is a deficient number, since it is larger than the sum of its proper divisors (58890476).

78436924 is a wasteful number, since it uses less digits than its factorization.

78436924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972 (or 8970 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 78436924 is about 8856.4622733911. The cubic root of 78436924 is about 428.0621725270.

The spelling of 78436924 in words is "seventy-eight million, four hundred thirty-six thousand, nine hundred twenty-four".