22678998 has 16 divisors (see below), whose sum is σ = 45405360. Its totient is φ = 7551776.

The previous prime is 22678991. The next prime is 22679021. The reversal of 22678998 is 89987622.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22678998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22678991) 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, 8668 + ... + 10976.

It is an arithmetic number, because the mean of its divisors is an integer number (2837835).

Almost surely, 2^22678998 is an apocalyptic number.

22678998 is an abundant number, since it is smaller than the sum of its proper divisors (22726362).

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

22678998 is a wasteful number, since it uses less digits than its factorization.

22678998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951.

The product of its digits is 870912, while the sum is 51.

The square root of 22678998 is about 4762.2471586427. The cubic root of 22678998 is about 283.0574702132.

The spelling of 22678998 in words is "twenty-two million, six hundred seventy-eight thousand, nine hundred ninety-eight".