22709631 has 16 divisors (see below), whose sum is σ = 35193600. Its totient is φ = 12756288.

The previous prime is 22709627. The next prime is 22709641. The reversal of 22709631 is 13690722.

It is not a de Polignac number, because 22709631 - 2² = 22709627 is a prime.

It is a super-2 number, since 2×22709631² = 1031454680312322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22709611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7926 + ... + 10403.

It is an arithmetic number, because the mean of its divisors is an integer number (2199600).

Almost surely, 2^22709631 is an apocalyptic number.

22709631 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22709631 is a deficient number, since it is larger than the sum of its proper divisors (12483969).

22709631 is a wasteful number, since it uses less digits than its factorization.

22709631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18398.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 22709631 is about 4765.4623070590. The cubic root of 22709631 is about 283.1848567703.

The spelling of 22709631 in words is "twenty-two million, seven hundred nine thousand, six hundred thirty-one".