97638090 has 32 divisors (see below), whose sum is σ = 255635136. Its totient is φ = 23669760.

The previous prime is 97638071. The next prime is 97638091. The reversal of 97638090 is 9083679.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (97638091) 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, 147607 + ... + 148266.

It is an arithmetic number, because the mean of its divisors is an integer number (7988598).

Almost surely, 2^97638090 is an apocalyptic number.

97638090 is an abundant number, since it is smaller than the sum of its proper divisors (157997046).

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

97638090 is a wasteful number, since it uses less digits than its factorization.

97638090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295894.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 97638090 is about 9881.1988139092. The cubic root of 97638090 is about 460.4753907020.

The spelling of 97638090 in words is "ninety-seven million, six hundred thirty-eight thousand, ninety".