74920408 has 8 divisors (see below), whose sum is σ = 140475780. Its totient is φ = 37460200.

The previous prime is 74920357. The next prime is 74920441. The reversal of 74920408 is 80402947.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×74920408² = 11226135069772928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4682518 + ... + 4682533.

Almost surely, 2^74920408 is an apocalyptic number.

It is an amenable number.

74920408 is a deficient number, since it is larger than the sum of its proper divisors (65555372).

74920408 is a wasteful number, since it uses less digits than its factorization.

74920408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9365057 (or 9365053 counting only the distinct ones).

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

The square root of 74920408 is about 8655.6575717851. The cubic root of 74920408 is about 421.5671009762.

The spelling of 74920408 in words is "seventy-four million, nine hundred twenty thousand, four hundred eight".