97123240 has 32 divisors (see below), whose sum is σ = 223613280. Its totient is φ = 37945152.

The previous prime is 97123223. The next prime is 97123249. The reversal of 97123240 is 4232179.

It is a junction number, because it is equal to n+sod(n) for n = 97123199 and 97123208.

It is not an unprimeable number, because it can be changed into a prime (97123249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26514 + ... + 29953.

It is an arithmetic number, because the mean of its divisors is an integer number (6987915).

Almost surely, 2^97123240 is an apocalyptic number.

It is an amenable number.

97123240 is an abundant number, since it is smaller than the sum of its proper divisors (126490040).

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

97123240 is a wasteful number, since it uses less digits than its factorization.

97123240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56521 (or 56517 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 97123240 is about 9855.1123788620. The cubic root of 97123240 is about 459.6645948210.

The spelling of 97123240 in words is "ninety-seven million, one hundred twenty-three thousand, two hundred forty".