22561038 has 32 divisors (see below), whose sum is σ = 50608800. Its totient is φ = 7449408.

The previous prime is 22561027. The next prime is 22561039. The reversal of 22561038 is 83016522.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22561039) 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, 3970 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (1581525).

Almost surely, 2^22561038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22561038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25304400).

22561038 is an abundant number, since it is smaller than the sum of its proper divisors (28047762).

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

22561038 is a wasteful number, since it uses less digits than its factorization.

22561038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 22561038 is about 4749.8461027701. The cubic root of 22561038 is about 282.5658624205.

The spelling of 22561038 in words is "twenty-two million, five hundred sixty-one thousand, thirty-eight".