74039904 has 72 divisors (see below), whose sum is σ = 217369152. Its totient is φ = 23880960.

The previous prime is 74039897. The next prime is 74039939. The reversal of 74039904 is 40993047.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4782 + ... + 13074.

It is an arithmetic number, because the mean of its divisors is an integer number (3019016).

Almost surely, 2^74039904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74039904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108684576).

74039904 is an abundant number, since it is smaller than the sum of its proper divisors (143329248).

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

74039904 is a wasteful number, since it uses less digits than its factorization.

74039904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340 (or 8329 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 74039904 is about 8604.6443273386. The cubic root of 74039904 is about 419.9090959726.

The spelling of 74039904 in words is "seventy-four million, thirty-nine thousand, nine hundred four".