74906520 has 64 divisors (see below), whose sum is σ = 242010720. Its totient is φ = 18438144.

The previous prime is 74906501. The next prime is 74906521. The reversal of 74906520 is 2560947.

It is a super-2 number, since 2×74906520² = 11221973477020800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74906521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22449 + ... + 25568.

Almost surely, 2^74906520 is an apocalyptic number.

It is an amenable number.

74906520 is an abundant number, since it is smaller than the sum of its proper divisors (167104200).

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

74906520 is a wasteful number, since it uses less digits than its factorization.

74906520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48044 (or 48040 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 74906520 is about 8654.8552847520. The cubic root of 74906520 is about 421.5410507279.

The spelling of 74906520 in words is "seventy-four million, nine hundred six thousand, five hundred twenty".