75444372 has 30 divisors (see below), whose sum is σ = 197227338. Its totient is φ = 25148016.

The previous prime is 75444371. The next prime is 75444379. The reversal of 75444372 is 27344457.

75444372 is a `hidden beast` number, since 7 + 544 + 43 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75272976 + 171396 = 8676^2 + 414^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75444371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 116103 + ... + 116750.

Almost surely, 2^75444372 is an apocalyptic number.

It is an amenable number.

75444372 is an abundant number, since it is smaller than the sum of its proper divisors (121782966).

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

75444372 is a wasteful number, since it uses less digits than its factorization.

75444372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232869 (or 232858 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 75444372 is about 8685.8719769520. The cubic root of 75444372 is about 422.5475772432.

The spelling of 75444372 in words is "seventy-five million, four hundred forty-four thousand, three hundred seventy-two".