22254512 has 20 divisors (see below), whose sum is σ = 49278096. Its totient is φ = 9537600.

The previous prime is 22254511. The next prime is 22254517. The reversal of 22254512 is 21545222.

It is not an unprimeable number, because it can be changed into a prime (22254511) 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, 99239 + ... + 99462.

Almost surely, 2^22254512 is an apocalyptic number.

It is an amenable number.

22254512 is an abundant number, since it is smaller than the sum of its proper divisors (27023584).

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

22254512 is a wasteful number, since it uses less digits than its factorization.

22254512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198716 (or 198710 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 22254512 is about 4717.4688128275. The cubic root of 22254512 is about 281.2803271330.

Adding to 22254512 its reverse (21545222), we get a palindrome (43799734).

The spelling of 22254512 in words is "twenty-two million, two hundred fifty-four thousand, five hundred twelve".