97890372 has 54 divisors (see below), whose sum is σ = 252141162. Its totient is φ = 32016384.

The previous prime is 97890367. The next prime is 97890389. The reversal of 97890372 is 27309879.

It can be written as a sum of positive squares in 3 ways, for example, as 2359296 + 95531076 = 1536^2 + 9774^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 507108 + ... + 507300.

Almost surely, 2^97890372 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 97890372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126070581).

97890372 is an abundant number, since it is smaller than the sum of its proper divisors (154250790).

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

97890372 is a wasteful number, since it uses less digits than its factorization.

97890372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 97890372 is about 9893.9563370777. The cubic root of 97890372 is about 460.8716491055.

The spelling of 97890372 in words is "ninety-seven million, eight hundred ninety thousand, three hundred seventy-two".