78973424 has 20 divisors (see below), whose sum is σ = 161064840. Its totient is φ = 37408320.

The previous prime is 78973379. The next prime is 78973439. The reversal of 78973424 is 42437987.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 129587 + ... + 130194.

It is an arithmetic number, because the mean of its divisors is an integer number (8053242).

Almost surely, 2^78973424 is an apocalyptic number.

It is an amenable number.

78973424 is an abundant number, since it is smaller than the sum of its proper divisors (82091416).

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

78973424 is a wasteful number, since it uses less digits than its factorization.

78973424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259808 (or 259802 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 78973424 is about 8886.6992747589. The cubic root of 78973424 is about 429.0359219580.

It can be divided in two parts, 78973 and 424, that added together give a palindrome (79397).

The spelling of 78973424 in words is "seventy-eight million, nine hundred seventy-three thousand, four hundred twenty-four".