75572720 has 20 divisors (see below), whose sum is σ = 175706760. Its totient is φ = 30229056.

The previous prime is 75572713. The next prime is 75572737. The reversal of 75572720 is 2727557.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×75572720² = 11422472016396800, 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 in 3 ways as a sum of consecutive naturals, for example, 472250 + ... + 472409.

It is an arithmetic number, because the mean of its divisors is an integer number (8785338).

Almost surely, 2^75572720 is an apocalyptic number.

It is an amenable number.

75572720 is an abundant number, since it is smaller than the sum of its proper divisors (100134040).

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

75572720 is a wasteful number, since it uses less digits than its factorization.

75572720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944672 (or 944666 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 35.

The square root of 75572720 is about 8693.2571571305. The cubic root of 75572720 is about 422.7870579349.

The spelling of 75572720 in words is "seventy-five million, five hundred seventy-two thousand, seven hundred twenty".