22791944 has 64 divisors (see below), whose sum is σ = 53145600. Its totient is φ = 8942400.

The previous prime is 22791931. The next prime is 22792013. The reversal of 22791944 is 44919722.

It is a super-2 number, since 2×22791944² = 1038945422598272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 22791898 and 22791907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32639 + ... + 33329.

It is an arithmetic number, because the mean of its divisors is an integer number (830400).

Almost surely, 2^22791944 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 22791944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26572800).

22791944 is an abundant number, since it is smaller than the sum of its proper divisors (30353656).

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

22791944 is a wasteful number, since it uses less digits than its factorization.

22791944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 750 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 22791944 is about 4774.0909082254. The cubic root of 22791944 is about 283.5265868041.

The spelling of 22791944 in words is "twenty-two million, seven hundred ninety-one thousand, nine hundred forty-four".