22420044 has 24 divisors (see below), whose sum is σ = 58126320. Its totient is φ = 7473312.

The previous prime is 22420033. The next prime is 22420063. The reversal of 22420044 is 44002422.

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 = 22419999 and 22420026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103689 + ... + 103904.

It is an arithmetic number, because the mean of its divisors is an integer number (2421930).

Almost surely, 2^22420044 is an apocalyptic number.

It is an amenable number.

22420044 is an abundant number, since it is smaller than the sum of its proper divisors (35706276).

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

22420044 is a wasteful number, since it uses less digits than its factorization.

22420044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207606 (or 207598 counting only the distinct ones).

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

The square root of 22420044 is about 4734.9808869730. The cubic root of 22420044 is about 281.9760052015.

Adding to 22420044 its reverse (44002422), we get a palindrome (66422466).

The spelling of 22420044 in words is "twenty-two million, four hundred twenty thousand, forty-four".