22636998 has 12 divisors (see below), whose sum is σ = 49046868. Its totient is φ = 7545660.

The previous prime is 22636993. The next prime is 22637003. The reversal of 22636998 is 89963622.

22636998 is a `hidden beast` number, since 2 + 2 + 636 + 9 + 9 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (22636993) and next prime (22637003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22636993) 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 5 ways as a sum of consecutive naturals, for example, 628788 + ... + 628823.

It is an arithmetic number, because the mean of its divisors is an integer number (4087239).

Almost surely, 2^22636998 is an apocalyptic number.

22636998 is an abundant number, since it is smaller than the sum of its proper divisors (26409870).

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

22636998 is a wasteful number, since it uses less digits than its factorization.

22636998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257619 (or 1257616 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 22636998 is about 4757.8354322107. The cubic root of 22636998 is about 282.8826276833.

It can be divided in two parts, 2263 and 6998, that added together give a cube (9261 = 21³).

The spelling of 22636998 in words is "twenty-two million, six hundred thirty-six thousand, nine hundred ninety-eight".