749424720 has 80 divisors (see below), whose sum is σ = 2534427072. Its totient is φ = 181678080.

The previous prime is 749424707. The next prime is 749424737. The reversal of 749424720 is 27424947.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139297 + ... + 144576.

Almost surely, 2^749424720 is an apocalyptic number.

It is an amenable number.

749424720 is an abundant number, since it is smaller than the sum of its proper divisors (1785002352).

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

749424720 is a wasteful number, since it uses less digits than its factorization.

749424720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283900 (or 283894 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 749424720 is about 27375.6227326430. The cubic root of 749424720 is about 908.3279362995.

The spelling of 749424720 in words is "seven hundred forty-nine million, four hundred twenty-four thousand, seven hundred twenty".