97236990 has 64 divisors (see below), whose sum is σ = 262483200. Its totient is φ = 25611552.

The previous prime is 97236967. The next prime is 97237009. The reversal of 97236990 is 9963279.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20241 + ... + 24579.

It is an arithmetic number, because the mean of its divisors is an integer number (4101300).

Almost surely, 2^97236990 is an apocalyptic number.

97236990 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 97236990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131241600).

97236990 is an abundant number, since it is smaller than the sum of its proper divisors (165246210).

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

97236990 is a wasteful number, since it uses less digits than its factorization.

97236990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438 (or 4432 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 97236990 is about 9860.8818064106. The cubic root of 97236990 is about 459.8439767015.

The spelling of 97236990 in words is "ninety-seven million, two hundred thirty-six thousand, nine hundred ninety".