749640872 has 8 divisors (see below), whose sum is σ = 1405576650. Its totient is φ = 374820432.

The previous prime is 749640821. The next prime is 749640883. The reversal of 749640872 is 278046947.

749640872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 655667236 + 93973636 = 25606^2 + 9694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×749640872² = 1123922873945840768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46852547 + ... + 46852562.

Almost surely, 2^749640872 is an apocalyptic number.

It is an amenable number.

749640872 is a deficient number, since it is larger than the sum of its proper divisors (655935778).

749640872 is a wasteful number, since it uses less digits than its factorization.

749640872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93705115 (or 93705111 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 749640872 is about 27379.5703399451. The cubic root of 749640872 is about 908.4152557335.

The spelling of 749640872 in words is "seven hundred forty-nine million, six hundred forty thousand, eight hundred seventy-two".