22631249 has 4 divisors (see below), whose sum is σ = 22842864. Its totient is φ = 22419636.

The previous prime is 22631243. The next prime is 22631251. The reversal of 22631249 is 94213622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94213622 = 2 ⋅47106811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22631249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22631243) 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, 105647 + ... + 105860.

It is an arithmetic number, because the mean of its divisors is an integer number (5710716).

Almost surely, 2^22631249 is an apocalyptic number.

It is an amenable number.

22631249 is a deficient number, since it is larger than the sum of its proper divisors (211615).

22631249 is a wasteful number, since it uses less digits than its factorization.

22631249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211614.

The product of its digits is 5184, while the sum is 29.

The square root of 22631249 is about 4757.2312325553. The cubic root of 22631249 is about 282.8586782485.

The spelling of 22631249 in words is "twenty-two million, six hundred thirty-one thousand, two hundred forty-nine".