97815942 has 24 divisors (see below), whose sum is σ = 242211216. Its totient is φ = 27947376.

The previous prime is 97815931. The next prime is 97815953. The reversal of 97815942 is 24951879.

It is an interprime number because it is at equal distance from previous prime (97815931) and next prime (97815953).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388033 + ... + 388284.

It is an arithmetic number, because the mean of its divisors is an integer number (10092134).

Almost surely, 2^97815942 is an apocalyptic number.

97815942 is an abundant number, since it is smaller than the sum of its proper divisors (144395274).

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

97815942 is a wasteful number, since it uses less digits than its factorization.

97815942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776332 (or 776329 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 97815942 is about 9890.1942346953. The cubic root of 97815942 is about 460.7548130513.

The spelling of 97815942 in words is "ninety-seven million, eight hundred fifteen thousand, nine hundred forty-two".