75720432 has 20 divisors (see below), whose sum is σ = 195611240. Its totient is φ = 25240128.

The previous prime is 75720391. The next prime is 75720433. The reversal of 75720432 is 23402757.

It is a self number, because there is not a number n which added to its sum of digits gives 75720432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75720433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788707 + ... + 788802.

It is an arithmetic number, because the mean of its divisors is an integer number (9780562).

Almost surely, 2^75720432 is an apocalyptic number.

It is an amenable number.

75720432 is an abundant number, since it is smaller than the sum of its proper divisors (119890808).

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

75720432 is a wasteful number, since it uses less digits than its factorization.

75720432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577520 (or 1577514 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 75720432 is about 8701.7487897549. The cubic root of 75720432 is about 423.0623339780.

The spelling of 75720432 in words is "seventy-five million, seven hundred twenty thousand, four hundred thirty-two".