22199898 has 32 divisors (see below), whose sum is σ = 51705216. Its totient is φ = 6222528.

The previous prime is 22199887. The next prime is 22199929. The reversal of 22199898 is 89899122.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2761 + ... + 7212.

It is an arithmetic number, because the mean of its divisors is an integer number (1615788).

Almost surely, 2^22199898 is an apocalyptic number.

22199898 is an abundant number, since it is smaller than the sum of its proper divisors (29505318).

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

22199898 is a wasteful number, since it uses less digits than its factorization.

22199898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10038.

The product of its digits is 186624, while the sum is 48.

The square root of 22199898 is about 4711.6767715963. The cubic root of 22199898 is about 281.0500453327.

The spelling of 22199898 in words is "twenty-two million, one hundred ninety-nine thousand, eight hundred ninety-eight".