97980288 has 64 divisors (see below), whose sum is σ = 297448320. Its totient is φ = 27993600.

The previous prime is 97980277. The next prime is 97980313. The reversal of 97980288 is 88208979.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 97980288.

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 7 ways as a sum of consecutive naturals, for example, 15538 + ... + 20913.

It is an arithmetic number, because the mean of its divisors is an integer number (4647630).

Almost surely, 2^97980288 is an apocalyptic number.

It is an amenable number.

97980288 is an abundant number, since it is smaller than the sum of its proper divisors (199468032).

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

97980288 is a wasteful number, since it uses less digits than its factorization.

97980288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36475 (or 36463 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 97980288 is about 9898.4992801939. The cubic root of 97980288 is about 461.0127152554.

The spelling of 97980288 in words is "ninety-seven million, nine hundred eighty thousand, two hundred eighty-eight".