748640172 has 24 divisors (see below), whose sum is σ = 1996374016. Its totient is φ = 213897168.

The previous prime is 748640149. The next prime is 748640183. The reversal of 748640172 is 271046847.

It is a self number, because there is not a number n which added to its sum of digits gives 748640172.

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, 4456108 + ... + 4456275.

Almost surely, 2^748640172 is an apocalyptic number.

It is an amenable number.

748640172 is an abundant number, since it is smaller than the sum of its proper divisors (1247733844).

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

748640172 is a wasteful number, since it uses less digits than its factorization.

748640172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8912397 (or 8912395 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 748640172 is about 27361.2896625872. The cubic root of 748640172 is about 908.0108594508.

The spelling of 748640172 in words is "seven hundred forty-eight million, six hundred forty thousand, one hundred seventy-two".