97991224 has 16 divisors (see below), whose sum is σ = 191722320. Its totient is φ = 46865280.

The previous prime is 97991219. The next prime is 97991233. The reversal of 97991224 is 42219979.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266097 + ... + 266464.

It is an arithmetic number, because the mean of its divisors is an integer number (11982645).

Almost surely, 2^97991224 is an apocalyptic number.

It is an amenable number.

97991224 is a deficient number, since it is larger than the sum of its proper divisors (93731096).

97991224 is a wasteful number, since it uses less digits than its factorization.

97991224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532590 (or 532586 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 97991224 is about 9899.0516717512. The cubic root of 97991224 is about 461.0298664859.

The spelling of 97991224 in words is "ninety-seven million, nine hundred ninety-one thousand, two hundred twenty-four".