389728716 has 48 divisors (see below), whose sum is σ = 997817184. Its totient is φ = 117651456.

The previous prime is 389728681. The next prime is 389728783. The reversal of 389728716 is 617827983.

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, 15301 + ... + 31836.

It is an arithmetic number, because the mean of its divisors is an integer number (20787858).

Almost surely, 2^389728716 is an apocalyptic number.

It is an amenable number.

389728716 is an abundant number, since it is smaller than the sum of its proper divisors (608088468).

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

389728716 is a wasteful number, since it uses less digits than its factorization.

389728716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47210 (or 47208 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 389728716 is about 19741.5479636223. The cubic root of 389728716 is about 730.4449129960. Note that the first 3 decimals are identical.

The spelling of 389728716 in words is "three hundred eighty-nine million, seven hundred twenty-eight thousand, seven hundred sixteen".