730186920 has 64 divisors (see below), whose sum is σ = 2433960000. Its totient is φ = 194716224.

The previous prime is 730186909. The next prime is 730186979. The reversal of 730186920 is 29681037.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336970 + ... + 339129.

It is an arithmetic number, because the mean of its divisors is an integer number (38030625).

Almost surely, 2^730186920 is an apocalyptic number.

It is an amenable number.

730186920 is an abundant number, since it is smaller than the sum of its proper divisors (1703773080).

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

730186920 is a wasteful number, since it uses less digits than its factorization.

730186920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676119 (or 676109 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 730186920 is about 27021.9710606018. The cubic root of 730186920 is about 900.4881795973.

The spelling of 730186920 in words is "seven hundred thirty million, one hundred eighty-six thousand, nine hundred twenty".