75009972 has 12 divisors (see below), whose sum is σ = 175023296. Its totient is φ = 25003320.

The previous prime is 75009959. The next prime is 75009997. The reversal of 75009972 is 27990057.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 75009972.

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, 3125404 + ... + 3125427.

Almost surely, 2^75009972 is an apocalyptic number.

It is an amenable number.

75009972 is an abundant number, since it is smaller than the sum of its proper divisors (100013324).

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

75009972 is a wasteful number, since it uses less digits than its factorization.

75009972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6250838 (or 6250836 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 75009972 is about 8660.8297523967. The cubic root of 75009972 is about 421.7350222904.

The spelling of 75009972 in words is "seventy-five million, nine thousand, nine hundred seventy-two".