745232640 has 72 divisors (see below), whose sum is σ = 2380099008. Its totient is φ = 198727680.

The previous prime is 745232623. The next prime is 745232647. The reversal of 745232640 is 46232547.

It is not an unprimeable number, because it can be changed into a prime (745232647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93196 + ... + 100875.

Almost surely, 2^745232640 is an apocalyptic number.

It is an amenable number.

745232640 is an abundant number, since it is smaller than the sum of its proper divisors (1634866368).

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

745232640 is a wasteful number, since it uses less digits than its factorization.

745232640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194095 (or 194081 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 745232640 is about 27298.9494303352. The cubic root of 745232640 is about 906.6311212516.

The spelling of 745232640 in words is "seven hundred forty-five million, two hundred thirty-two thousand, six hundred forty".