22661392 has 20 divisors (see below), whose sum is σ = 47284300. Its totient is φ = 10459008.

The previous prime is 22661389. The next prime is 22661393. The reversal of 22661392 is 29316622.

It can be written as a sum of positive squares in 2 ways, for example, as 15241216 + 7420176 = 3904^2 + 2724^2 .

It is not an unprimeable number, because it can be changed into a prime (22661393) 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, 54267 + ... + 54682.

It is an arithmetic number, because the mean of its divisors is an integer number (2364215).

Almost surely, 2^22661392 is an apocalyptic number.

It is an amenable number.

22661392 is an abundant number, since it is smaller than the sum of its proper divisors (24622908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22661392 is a wasteful number, since it uses less digits than its factorization.

22661392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108970 (or 108964 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 22661392 is about 4760.3983026633. The cubic root of 22661392 is about 282.9842041902.

The spelling of 22661392 in words is "twenty-two million, six hundred sixty-one thousand, three hundred ninety-two".