22254736 has 40 divisors (see below), whose sum is σ = 50435264. Its totient is φ = 9313920.

The previous prime is 22254733. The next prime is 22254761. The reversal of 22254736 is 63745222.

It is a junction number, because it is equal to n+sod(n) for n = 22254698 and 22254707.

It is not an unprimeable number, because it can be changed into a prime (22254733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2506 + ... + 7126.

Almost surely, 2^22254736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22254736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25217632).

22254736 is an abundant number, since it is smaller than the sum of its proper divisors (28180528).

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

22254736 is a wasteful number, since it uses less digits than its factorization.

22254736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679 (or 4673 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 22254736 is about 4717.4925543131. The cubic root of 22254736 is about 281.2812708605.

Adding to 22254736 its reverse (63745222), we get a palindrome (85999958).

The spelling of 22254736 in words is "twenty-two million, two hundred fifty-four thousand, seven hundred thirty-six".