74406840 has 64 divisors (see below), whose sum is σ = 232934400. Its totient is φ = 18978432.

The previous prime is 74406823. The next prime is 74406877. The reversal of 74406840 is 4860447.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10720 + ... + 16239.

It is an arithmetic number, because the mean of its divisors is an integer number (3639600).

Almost surely, 2^74406840 is an apocalyptic number.

It is an amenable number.

74406840 is an abundant number, since it is smaller than the sum of its proper divisors (158527560).

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

74406840 is a wasteful number, since it uses less digits than its factorization.

74406840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26996 (or 26992 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 74406840 is about 8625.9399487824. The cubic root of 74406840 is about 420.6016321072.

The spelling of 74406840 in words is "seventy-four million, four hundred six thousand, eight hundred forty".