75640432 has 40 divisors (see below), whose sum is σ = 172025696. Its totient is φ = 31539456.

The previous prime is 75640417. The next prime is 75640459. The reversal of 75640432 is 23404657.

It is a junction number, because it is equal to n+sod(n) for n = 75640394 and 75640403.

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, 4983 + ... + 13270.

Almost surely, 2^75640432 is an apocalyptic number.

It is an amenable number.

75640432 is an abundant number, since it is smaller than the sum of its proper divisors (96385264).

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

75640432 is a wasteful number, since it uses less digits than its factorization.

75640432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18305 (or 18299 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 75640432 is about 8697.1507978188. The cubic root of 75640432 is about 422.9132904851.

The spelling of 75640432 in words is "seventy-five million, six hundred forty thousand, four hundred thirty-two".