22751226 has 64 divisors (see below), whose sum is σ = 53078400. Its totient is φ = 7216128.

The previous prime is 22751191. The next prime is 22751233. The reversal of 22751226 is 62215722.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22751226.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117786 + ... + 117978.

It is an arithmetic number, because the mean of its divisors is an integer number (829350).

Almost surely, 2^22751226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22751226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26539200).

22751226 is an abundant number, since it is smaller than the sum of its proper divisors (30327174).

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

22751226 is a wasteful number, since it uses less digits than its factorization.

22751226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 294 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 22751226 is about 4769.8245250743. The cubic root of 22751226 is about 283.3576452802.

Adding to 22751226 its reverse (62215722), we get a palindrome (84966948).

The spelling of 22751226 in words is "twenty-two million, seven hundred fifty-one thousand, two hundred twenty-six".