22726668 has 48 divisors (see below), whose sum is σ = 56206080. Its totient is φ = 7132224.

The previous prime is 22726667. The next prime is 22726721. The reversal of 22726668 is 86662722.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22726663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17878 + ... + 19106.

It is an arithmetic number, because the mean of its divisors is an integer number (1170960).

Almost surely, 2^22726668 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 22726668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28103040).

22726668 is an abundant number, since it is smaller than the sum of its proper divisors (33479412).

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

22726668 is a wasteful number, since it uses less digits than its factorization.

22726668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1324 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 22726668 is about 4767.2495214746. The cubic root of 22726668 is about 283.2556551380.

The spelling of 22726668 in words is "twenty-two million, seven hundred twenty-six thousand, six hundred sixty-eight".