22912812 has 72 divisors (see below), whose sum is σ = 62955984. Its totient is φ = 6984576.

The previous prime is 22912811. The next prime is 22912819. The reversal of 22912812 is 21821922.

It is not an unprimeable number, because it can be changed into a prime (22912811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80823 + ... + 81105.

Almost surely, 2^22912812 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 22912812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31477992).

22912812 is an abundant number, since it is smaller than the sum of its proper divisors (40043172).

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

22912812 is a wasteful number, since it uses less digits than its factorization.

22912812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 474 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 22912812 is about 4786.7329150476. The cubic root of 22912812 is about 284.0268935717.

It can be divided in two parts, 229 and 12812, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 22912812 in words is "twenty-two million, nine hundred twelve thousand, eight hundred twelve".