22606992 has 80 divisors (see below), whose sum is σ = 66454080. Its totient is φ = 7354368.

The previous prime is 22606981. The next prime is 22606993. The reversal of 22606992 is 29960622.

It is a super-2 number, since 2×22606992² = 1022152174576128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22606993) 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 15 ways as a sum of consecutive naturals, for example, 17968 + ... + 19184.

It is an arithmetic number, because the mean of its divisors is an integer number (830676).

Almost surely, 2^22606992 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 22606992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33227040).

22606992 is an abundant number, since it is smaller than the sum of its proper divisors (43847088).

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

22606992 is a wasteful number, since it uses less digits than its factorization.

22606992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 22606992 is about 4754.6810618589. The cubic root of 22606992 is about 282.7575826967.

The spelling of 22606992 in words is "twenty-two million, six hundred six thousand, nine hundred ninety-two".