22237998 has 16 divisors (see below), whose sum is σ = 44601600. Its totient is φ = 7391736.

The previous prime is 22237997. The next prime is 22238011. The reversal of 22237998 is 89973222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22237997) 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, 2848 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (2787600).

Almost surely, 2^22237998 is an apocalyptic number.

22237998 is an abundant number, since it is smaller than the sum of its proper divisors (22363602).

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

22237998 is a wasteful number, since it uses less digits than its factorization.

22237998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10471.

The product of its digits is 108864, while the sum is 42.

The square root of 22237998 is about 4715.7181849640. The cubic root of 22237998 is about 281.2107350617.

The spelling of 22237998 in words is "twenty-two million, two hundred thirty-seven thousand, nine hundred ninety-eight".