22561234 has 16 divisors (see below), whose sum is σ = 35151480. Its totient is φ = 10851840.

The previous prime is 22561219. The next prime is 22561243. The reversal of 22561234 is 43216522.

It can be written as a sum of positive squares in 4 ways, for example, as 18088009 + 4473225 = 4253^2 + 2115^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22561199 and 22561208.

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, 4102 + ... + 7870.

Almost surely, 2^22561234 is an apocalyptic number.

22561234 is a deficient number, since it is larger than the sum of its proper divisors (12590246).

22561234 is a wasteful number, since it uses less digits than its factorization.

22561234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885.

The product of its digits is 2880, while the sum is 25.

The square root of 22561234 is about 4749.8667349727. The cubic root of 22561234 is about 282.5666806858.

Adding to 22561234 its reverse (43216522), we get a palindrome (65777756).

The spelling of 22561234 in words is "twenty-two million, five hundred sixty-one thousand, two hundred thirty-four".