78040924 has 12 divisors (see below), whose sum is σ = 147077224. Its totient is φ = 36018864.

The previous prime is 78040913. The next prime is 78040927. The reversal of 78040924 is 42904087.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78040924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78040927) 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, 750342 + ... + 750445.

Almost surely, 2^78040924 is an apocalyptic number.

It is an amenable number.

78040924 is a deficient number, since it is larger than the sum of its proper divisors (69036300).

78040924 is a wasteful number, since it uses less digits than its factorization.

78040924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500804 (or 1500802 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 78040924 is about 8834.0774277793. The cubic root of 78040924 is about 427.3405791581.

The spelling of 78040924 in words is "seventy-eight million, forty thousand, nine hundred twenty-four".