22444020 has 96 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 5905152.

The previous prime is 22444007. The next prime is 22444027. The reversal of 22444020 is 2044422.

22444020 is a `hidden beast` number, since 224 + 440 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22443984 and 22444002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47827 + ... + 48293.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^22444020 is an apocalyptic number.

22444020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22444020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35380800).

22444020 is an abundant number, since it is smaller than the sum of its proper divisors (48317580).

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

22444020 is a wasteful number, since it uses less digits than its factorization.

22444020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 22444020 is about 4737.5120052618. The cubic root of 22444020 is about 282.0764844599.

Adding to 22444020 its reverse (2044422), we get a palindrome (24488442).

It can be divided in two parts, 224 and 44020, that added together give a palindrome (44244).

The spelling of 22444020 in words is "twenty-two million, four hundred forty-four thousand, twenty".