97881198 has 32 divisors (see below), whose sum is σ = 212720640. Its totient is φ = 29911680.

The previous prime is 97881193. The next prime is 97881211. The reversal of 97881198 is 89118879.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 97881198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97881191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10315 + ... + 17382.

It is an arithmetic number, because the mean of its divisors is an integer number (6647520).

Almost surely, 2^97881198 is an apocalyptic number.

97881198 is an abundant number, since it is smaller than the sum of its proper divisors (114839442).

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

97881198 is a wasteful number, since it uses less digits than its factorization.

97881198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27752.

The product of its digits is 290304, while the sum is 51.

The square root of 97881198 is about 9893.4927098573. The cubic root of 97881198 is about 460.8572514737.

The spelling of 97881198 in words is "ninety-seven million, eight hundred eighty-one thousand, one hundred ninety-eight".