22098906 has 56 divisors (see below), whose sum is σ = 51939360. Its totient is φ = 7035336.

The previous prime is 22098887. The next prime is 22098911. The reversal of 22098906 is 60989022.

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 27 ways as a sum of consecutive naturals, for example, 33205 + ... + 33863.

Almost surely, 2^22098906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22098906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25969680).

22098906 is an abundant number, since it is smaller than the sum of its proper divisors (29840454).

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

22098906 is an equidigital number, since it uses as much as digits as its factorization.

22098906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 22098906 is about 4700.9473513325. The cubic root of 22098906 is about 280.6232121916.

The spelling of 22098906 in words is "twenty-two million, ninety-eight thousand, nine hundred six".