97890870 has 128 divisors (see below), whose sum is σ = 302579712. Its totient is φ = 19670400.

The previous prime is 97890857. The next prime is 97890893. The reversal of 97890870 is 7809879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70927 + ... + 72293.

It is an arithmetic number, because the mean of its divisors is an integer number (2363904).

Almost surely, 2^97890870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97890870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151289856).

97890870 is an abundant number, since it is smaller than the sum of its proper divisors (204688842).

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

97890870 is a wasteful number, since it uses less digits than its factorization.

97890870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426.

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 97890870 is about 9893.9815039245. The cubic root of 97890870 is about 460.8724306386.

The spelling of 97890870 in words is "ninety-seven million, eight hundred ninety thousand, eight hundred seventy".