97290138 has 32 divisors (see below), whose sum is σ = 221501952. Its totient is φ = 28199600.

The previous prime is 97290113. The next prime is 97290143. The reversal of 97290138 is 83109279.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 97290096 and 97290105.

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, 30528 + ... + 33563.

It is an arithmetic number, because the mean of its divisors is an integer number (6921936).

Almost surely, 2^97290138 is an apocalyptic number.

97290138 is an abundant number, since it is smaller than the sum of its proper divisors (124211814).

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

97290138 is a wasteful number, since it uses less digits than its factorization.

97290138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64130.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 97290138 is about 9863.5763291009. The cubic root of 97290138 is about 459.9277422734.

The spelling of 97290138 in words is "ninety-seven million, two hundred ninety thousand, one hundred thirty-eight".