22438736 has 10 divisors (see below), whose sum is σ = 43475082. Its totient is φ = 11219360.

The previous prime is 22438729. The next prime is 22438739. The reversal of 22438736 is 63783422.

It can be written as a sum of positive squares in only one way, i.e., 19749136 + 2689600 = 4444^2 + 1640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22438696 and 22438705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22438739) by changing a digit.

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 as a sum of consecutive naturals, namely, 701195 + ... + 701226.

Almost surely, 2^22438736 is an apocalyptic number.

It is an amenable number.

22438736 is a deficient number, since it is larger than the sum of its proper divisors (21036346).

22438736 is a wasteful number, since it uses less digits than its factorization.

22438736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402429 (or 1402423 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 22438736 is about 4736.9542957474. The cubic root of 22438736 is about 282.0543462819.

The spelling of 22438736 in words is "twenty-two million, four hundred thirty-eight thousand, seven hundred thirty-six".