22420744 has 8 divisors (see below), whose sum is σ = 42038910. Its totient is φ = 11210368.

The previous prime is 22420693. The next prime is 22420747. The reversal of 22420744 is 44702422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19980900 + 2439844 = 4470^2 + 1562^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (22420747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401289 + ... + 1401304.

Almost surely, 2^22420744 is an apocalyptic number.

It is an amenable number.

22420744 is a deficient number, since it is larger than the sum of its proper divisors (19618166).

22420744 is a wasteful number, since it uses less digits than its factorization.

22420744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802599 (or 2802595 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 22420744 is about 4735.0548043291. The cubic root of 22420744 is about 281.9789397950.

The spelling of 22420744 in words is "twenty-two million, four hundred twenty thousand, seven hundred forty-four".