75428624 has 20 divisors (see below), whose sum is σ = 146777436. Its totient is φ = 37550592.

The previous prime is 75428603. The next prime is 75428641. The reversal of 75428624 is 42682457.

It can be written as a sum of positive squares in 2 ways, for example, as 26708224 + 48720400 = 5168^2 + 6980^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6389 + ... + 13844.

Almost surely, 2^75428624 is an apocalyptic number.

It is an amenable number.

75428624 is a deficient number, since it is larger than the sum of its proper divisors (71348812).

75428624 is a wasteful number, since it uses less digits than its factorization.

75428624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20474 (or 20468 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 75428624 is about 8684.9654000462. The cubic root of 75428624 is about 422.5181748189.

The spelling of 75428624 in words is "seventy-five million, four hundred twenty-eight thousand, six hundred twenty-four".