22623444 has 72 divisors (see below), whose sum is σ = 60540480. Its totient is φ = 7108992.

The previous prime is 22623439. The next prime is 22623457. The reversal of 22623444 is 44432622.

It is a super-2 number, since 2×22623444² = 1023640436842272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 73539 + ... + 73845.

It is an arithmetic number, because the mean of its divisors is an integer number (840840).

Almost surely, 2^22623444 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 22623444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30270240).

22623444 is an abundant number, since it is smaller than the sum of its proper divisors (37917036).

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

22623444 is a wasteful number, since it uses less digits than its factorization.

22623444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 424 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 22623444 is about 4756.4108317091. The cubic root of 22623444 is about 282.8261573474.

The spelling of 22623444 in words is "twenty-two million, six hundred twenty-three thousand, four hundred forty-four".