749723840 has 56 divisors (see below), whose sum is σ = 1842893952. Its totient is φ = 290211840.

The previous prime is 749723833. The next prime is 749723857. The reversal of 749723840 is 48327947.

It is a junction number, because it is equal to n+sod(n) for n = 749723791 and 749723800.

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, 27869 + ... + 47708.

Almost surely, 2^749723840 is an apocalyptic number.

It is an amenable number.

749723840 is an abundant number, since it is smaller than the sum of its proper divisors (1093170112).

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

749723840 is a wasteful number, since it uses less digits than its factorization.

749723840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75625 (or 75615 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 749723840 is about 27381.0854423268. The cubic root of 749723840 is about 908.4487680544.

The spelling of 749723840 in words is "seven hundred forty-nine million, seven hundred twenty-three thousand, eight hundred forty".