97280188 has 24 divisors (see below), whose sum is σ = 180556992. Its totient is φ = 45702144.

The previous prime is 97280159. The next prime is 97280191. The reversal of 97280188 is 88108279.

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, 74356 + ... + 75652.

It is an arithmetic number, because the mean of its divisors is an integer number (7523208).

Almost surely, 2^97280188 is an apocalyptic number.

It is an amenable number.

97280188 is a deficient number, since it is larger than the sum of its proper divisors (83276804).

97280188 is a wasteful number, since it uses less digits than its factorization.

97280188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 97280188 is about 9863.0719352542. The cubic root of 97280188 is about 459.9120625853.

The spelling of 97280188 in words is "ninety-seven million, two hundred eighty thousand, one hundred eighty-eight".