22040264 has 8 divisors (see below), whose sum is σ = 41325510. Its totient is φ = 11020128.

The previous prime is 22040231. The next prime is 22040267. The reversal of 22040264 is 46204022.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 4884100 = 4142^2 + 2210^2 .

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 (22040267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377509 + ... + 1377524.

Almost surely, 2^22040264 is an apocalyptic number.

It is an amenable number.

22040264 is a deficient number, since it is larger than the sum of its proper divisors (19285246).

22040264 is a wasteful number, since it uses less digits than its factorization.

22040264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755039 (or 2755035 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22040264 is about 4694.7059545833. The cubic root of 22040264 is about 280.3747702681.

Adding to 22040264 its reverse (46204022), we get a palindrome (68244286).

The spelling of 22040264 in words is "twenty-two million, forty thousand, two hundred sixty-four".