22440631 has 4 divisors (see below), whose sum is σ = 22471264. Its totient is φ = 22410000.

The previous prime is 22440623. The next prime is 22440641. The reversal of 22440631 is 13604422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22440631 - 2³ = 22440623 is a prime.

It is a super-2 number, since 2×22440631² = 1007163839356322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14190 + ... + 15691.

It is an arithmetic number, because the mean of its divisors is an integer number (5617816).

Almost surely, 2^22440631 is an apocalyptic number.

22440631 is a deficient number, since it is larger than the sum of its proper divisors (30633).

22440631 is an equidigital number, since it uses as much as digits as its factorization.

22440631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30632.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22440631 is about 4737.1543145648. The cubic root of 22440631 is about 282.0622860925.

The spelling of 22440631 in words is "twenty-two million, four hundred forty thousand, six hundred thirty-one".