749155880 has 32 divisors (see below), whose sum is σ = 1838838240. Its totient is φ = 272420160.

The previous prime is 749155859. The next prime is 749155903. The reversal of 749155880 is 88551947.

It is a super-2 number, since 2×749155880² = 1122469065077148800, which contains 22 as substring.

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, 850874 + ... + 851753.

It is an arithmetic number, because the mean of its divisors is an integer number (57463695).

Almost surely, 2^749155880 is an apocalyptic number.

It is an amenable number.

749155880 is an abundant number, since it is smaller than the sum of its proper divisors (1089682360).

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

749155880 is a wasteful number, since it uses less digits than its factorization.

749155880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702649 (or 1702645 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 47.

The square root of 749155880 is about 27370.7120842699. The cubic root of 749155880 is about 908.2193089388.

The spelling of 749155880 in words is "seven hundred forty-nine million, one hundred fifty-five thousand, eight hundred eighty".