97728163 has 16 divisors (see below), whose sum is σ = 107787456. Its totient is φ = 88058880.

The previous prime is 97728157. The next prime is 97728187. The reversal of 97728163 is 36182779.

It is a happy number.

It is not a de Polignac number, because 97728163 - 2¹³ = 97719971 is a prime.

It is a Duffinian number.

Its product of digits (127008) is a multiple of the sum of its prime divisors (1134).

It is not an unprimeable number, because it can be changed into a prime (97728193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103831 + ... + 104767.

It is an arithmetic number, because the mean of its divisors is an integer number (6736716).

Almost surely, 2^97728163 is an apocalyptic number.

97728163 is a deficient number, since it is larger than the sum of its proper divisors (10059293).

97728163 is a wasteful number, since it uses less digits than its factorization.

97728163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its digits is 127008, while the sum is 43.

The square root of 97728163 is about 9885.7555604010. The cubic root of 97728163 is about 460.6169462915.

The spelling of 97728163 in words is "ninety-seven million, seven hundred twenty-eight thousand, one hundred sixty-three".