97021872 has 60 divisors (see below), whose sum is σ = 273011544. Its totient is φ = 32163840.

The previous prime is 97021831. The next prime is 97021921. The reversal of 97021872 is 27812079.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26047 + ... + 29537.

Almost surely, 2^97021872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97021872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136505772).

97021872 is an abundant number, since it is smaller than the sum of its proper divisors (175989672).

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

97021872 is a wasteful number, since it uses less digits than its factorization.

97021872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698 (or 3689 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 97021872 is about 9849.9681217758. The cubic root of 97021872 is about 459.5046210920.

The spelling of 97021872 in words is "ninety-seven million, twenty-one thousand, eight hundred seventy-two".