75731772 has 24 divisors (see below), whose sum is σ = 180818176. Its totient is φ = 24656688.

The previous prime is 75731749. The next prime is 75731833. The reversal of 75731772 is 27713757.

It is a self number, because there is not a number n which added to its sum of digits gives 75731772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72868 + ... + 73899.

Almost surely, 2^75731772 is an apocalyptic number.

It is an amenable number.

75731772 is an abundant number, since it is smaller than the sum of its proper divisors (105086404).

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

75731772 is a wasteful number, since it uses less digits than its factorization.

75731772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146817 (or 146815 counting only the distinct ones).

The product of its digits is 72030, while the sum is 39.

The square root of 75731772 is about 8702.4003585218. The cubic root of 75731772 is about 423.0834523968.

The spelling of 75731772 in words is "seventy-five million, seven hundred thirty-one thousand, seven hundred seventy-two".