745638132 has 48 divisors (see below), whose sum is σ = 1776079872. Its totient is φ = 243384960.

The previous prime is 745638107. The next prime is 745638137. The reversal of 745638132 is 231836547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745638137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506157 + ... + 507627.

It is an arithmetic number, because the mean of its divisors is an integer number (37001664).

Almost surely, 2^745638132 is an apocalyptic number.

It is an amenable number.

745638132 is an abundant number, since it is smaller than the sum of its proper divisors (1030441740).

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

745638132 is a wasteful number, since it uses less digits than its factorization.

745638132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2326 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 745638132 is about 27306.3752995523. The cubic root of 745638132 is about 906.7955285293.

The spelling of 745638132 in words is "seven hundred forty-five million, six hundred thirty-eight thousand, one hundred thirty-two".