22015254 has 16 divisors (see below), whose sum is σ = 44651520. Its totient is φ = 7234920.

The previous prime is 22015249. The next prime is 22015271. The reversal of 22015254 is 45251022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22015254.

It is a congruent number.

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, 25414 + ... + 26265.

It is an arithmetic number, because the mean of its divisors is an integer number (2790720).

Almost surely, 2^22015254 is an apocalyptic number.

22015254 is an abundant number, since it is smaller than the sum of its proper divisors (22636266).

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

22015254 is a wasteful number, since it uses less digits than its factorization.

22015254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51755.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22015254 is about 4692.0415599182. The cubic root of 22015254 is about 280.2686791763.

Adding to 22015254 its reverse (45251022), we get a palindrome (67266276).

The spelling of 22015254 in words is "twenty-two million, fifteen thousand, two hundred fifty-four".