22097808 has 30 divisors (see below), whose sum is σ = 61843574. Its totient is φ = 7365888.

The previous prime is 22097783. The next prime is 22097833. The reversal of 22097808 is 80879022.

It is an interprime number because it is at equal distance from previous prime (22097783) and next prime (22097833).

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 82944 = 4692^2 + 288^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76585 + ... + 76872.

Almost surely, 2^22097808 is an apocalyptic number.

It is an amenable number.

22097808 is an abundant number, since it is smaller than the sum of its proper divisors (39745766).

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

22097808 is a wasteful number, since it uses less digits than its factorization.

22097808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153471 (or 153462 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 22097808 is about 4700.8305649108. The cubic root of 22097808 is about 280.6185644594.

The spelling of 22097808 in words is "twenty-two million, ninety-seven thousand, eight hundred eight".