97891738 has 32 divisors (see below), whose sum is σ = 176209920. Its totient is φ = 39901680.

The previous prime is 97891697. The next prime is 97891753. The reversal of 97891738 is 83719879.

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, 23695 + ... + 27517.

It is an arithmetic number, because the mean of its divisors is an integer number (5506560).

Almost surely, 2^97891738 is an apocalyptic number.

97891738 is a deficient number, since it is larger than the sum of its proper divisors (78318182).

97891738 is a wasteful number, since it uses less digits than its factorization.

97891738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922.

The product of its digits is 762048, while the sum is 52.

The square root of 97891738 is about 9894.0253688779. The cubic root of 97891738 is about 460.8737928224.

The spelling of 97891738 in words is "ninety-seven million, eight hundred ninety-one thousand, seven hundred thirty-eight".