22789044 has 72 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 6834432.

The previous prime is 22789033. The next prime is 22789069. The reversal of 22789044 is 44098722.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13267 + ... + 14885.

It is an arithmetic number, because the mean of its divisors is an integer number (884520).

Almost surely, 2^22789044 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 22789044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31842720).

22789044 is an abundant number, since it is smaller than the sum of its proper divisors (40896396).

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

22789044 is a wasteful number, since it uses less digits than its factorization.

22789044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 22789044 is about 4773.7871758175. The cubic root of 22789044 is about 283.5145611811.

The spelling of 22789044 in words is "twenty-two million, seven hundred eighty-nine thousand, forty-four".