97728164 has 12 divisors (see below), whose sum is σ = 175001904. Its totient is φ = 47727624.

The previous prime is 97728157. The next prime is 97728187. The reversal of 97728164 is 46182779.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283922 + ... + 284265.

It is an arithmetic number, because the mean of its divisors is an integer number (14583492).

Almost surely, 2^97728164 is an apocalyptic number.

It is an amenable number.

97728164 is a deficient number, since it is larger than the sum of its proper divisors (77273740).

97728164 is a wasteful number, since it uses less digits than its factorization.

97728164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568234 (or 568232 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 97728164 is about 9885.7556109789. The cubic root of 97728164 is about 460.6169478625.

The spelling of 97728164 in words is "ninety-seven million, seven hundred twenty-eight thousand, one hundred sixty-four".