22678992 has 120 divisors (see below), whose sum is σ = 73507200. Its totient is φ = 6393600.

The previous prime is 22678991. The next prime is 22679021. The reversal of 22678992 is 29987622.

It is a nude number because it is divisible by every one of its digits.

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 (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150117 + ... + 150267.

It is an arithmetic number, because the mean of its divisors is an integer number (612560).

Almost surely, 2^22678992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22678992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36753600).

22678992 is an abundant number, since it is smaller than the sum of its proper divisors (50828208).

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

22678992 is a wasteful number, since it uses less digits than its factorization.

22678992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 312 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 22678992 is about 4762.2465286879. The cubic root of 22678992 is about 283.0574452511.

The spelling of 22678992 in words is "twenty-two million, six hundred seventy-eight thousand, nine hundred ninety-two".