22991298 has 16 divisors (see below), whose sum is σ = 50162976. Its totient is φ = 6967040.

The previous prime is 22991233. The next prime is 22991299. The reversal of 22991298 is 89219922.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22991299) by changing a digit.

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, 174111 + ... + 174242.

It is an arithmetic number, because the mean of its divisors is an integer number (3135186).

Almost surely, 2^22991298 is an apocalyptic number.

22991298 is an abundant number, since it is smaller than the sum of its proper divisors (27171678).

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

22991298 is a wasteful number, since it uses less digits than its factorization.

22991298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348369.

The product of its digits is 46656, while the sum is 42.

The square root of 22991298 is about 4794.9241912673. The cubic root of 22991298 is about 284.3508277647.

The spelling of 22991298 in words is "twenty-two million, nine hundred ninety-one thousand, two hundred ninety-eight".