97158820 has 24 divisors (see below), whose sum is σ = 222582528. Its totient is φ = 35330400.

The previous prime is 97158797. The next prime is 97158821. The reversal of 97158820 is 2885179.

It is not an unprimeable number, because it can be changed into a prime (97158821) 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, 220596 + ... + 221035.

It is an arithmetic number, because the mean of its divisors is an integer number (9274272).

Almost surely, 2^97158820 is an apocalyptic number.

It is an amenable number.

97158820 is an abundant number, since it is smaller than the sum of its proper divisors (125423708).

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

97158820 is a wasteful number, since it uses less digits than its factorization.

97158820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441651 (or 441649 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 97158820 is about 9856.9173680213. The cubic root of 97158820 is about 459.7207189425.

The spelling of 97158820 in words is "ninety-seven million, one hundred fifty-eight thousand, eight hundred twenty".