730728684 has 36 divisors (see below), whose sum is σ = 2110994704. Its totient is φ = 208779552.

The previous prime is 730728671. The next prime is 730728701. The reversal of 730728684 is 486827037.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1449607 + ... + 1450110.

Almost surely, 2^730728684 is an apocalyptic number.

It is an amenable number.

730728684 is an abundant number, since it is smaller than the sum of its proper divisors (1380266020).

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

730728684 is a wasteful number, since it uses less digits than its factorization.

730728684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899734 (or 2899729 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 730728684 is about 27031.9937111564. The cubic root of 730728684 is about 900.7108310217.

The spelling of 730728684 in words is "seven hundred thirty million, seven hundred twenty-eight thousand, six hundred eighty-four".