22605444 has 72 divisors (see below), whose sum is σ = 61981920. Its totient is φ = 6918912.

The previous prime is 22605439. The next prime is 22605467. The reversal of 22605444 is 44450622.

It is a super-2 number, since 2×22605444² = 1022012196874272, which contains 22 as substring.

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, 25887 + ... + 26745.

It is an arithmetic number, because the mean of its divisors is an integer number (860860).

Almost surely, 2^22605444 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 22605444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30990960).

22605444 is an abundant number, since it is smaller than the sum of its proper divisors (39376476).

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

22605444 is a wasteful number, since it uses less digits than its factorization.

22605444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 22605444 is about 4754.5182721281. The cubic root of 22605444 is about 282.7511286650.

The spelling of 22605444 in words is "twenty-two million, six hundred five thousand, four hundred forty-four".