22040965 has 8 divisors (see below), whose sum is σ = 26517528. Its totient is φ = 17587200.

The previous prime is 22040929. The next prime is 22040981. The reversal of 22040965 is 56904022.

It can be written as a sum of positive squares in 4 ways, for example, as 4743684 + 17297281 = 2178^2 + 4159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22040965 - 2²¹ = 19943813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3492 + ... + 7501.

It is an arithmetic number, because the mean of its divisors is an integer number (3314691).

Almost surely, 2^22040965 is an apocalyptic number.

It is an amenable number.

22040965 is a deficient number, since it is larger than the sum of its proper divisors (4476563).

22040965 is a wasteful number, since it uses less digits than its factorization.

22040965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11399.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 22040965 is about 4694.7806125526. The cubic root of 22040965 is about 280.3777427163.

Adding to 22040965 its reverse (56904022), we get a palindrome (78944987).

It can be divided in two parts, 22040 and 965, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 22040965 in words is "twenty-two million, forty thousand, nine hundred sixty-five".