22692978 has 72 divisors (see below), whose sum is σ = 62421840. Its totient is φ = 5891760.

The previous prime is 22692959. The next prime is 22692997. The reversal of 22692978 is 87929622.

It is an interprime number because it is at equal distance from previous prime (22692959) and next prime (22692997).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 8533 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (866970).

Almost surely, 2^22692978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22692978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31210920).

22692978 is an abundant number, since it is smaller than the sum of its proper divisors (39728862).

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

22692978 is a wasteful number, since it uses less digits than its factorization.

22692978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372 (or 2362 counting only the distinct ones).

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

The square root of 22692978 is about 4763.7147269752. The cubic root of 22692978 is about 283.1156199106.

The spelling of 22692978 in words is "twenty-two million, six hundred ninety-two thousand, nine hundred seventy-eight".