22054812 has 48 divisors (see below), whose sum is σ = 56932512. Its totient is φ = 6600960.

The previous prime is 22054807. The next prime is 22054817. The reversal of 22054812 is 21845022.

It is an interprime number because it is at equal distance from previous prime (22054807) and next prime (22054817).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22054817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3862 + ... + 7682.

It is an arithmetic number, because the mean of its divisors is an integer number (1186094).

Almost surely, 2^22054812 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 22054812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28466256).

22054812 is an abundant number, since it is smaller than the sum of its proper divisors (34877700).

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

22054812 is a wasteful number, since it uses less digits than its factorization.

22054812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878 (or 3876 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 22054812 is about 4696.2551038035. The cubic root of 22054812 is about 280.4364451954.

Adding to 22054812 its reverse (21845022), we get a palindrome (43899834).

The spelling of 22054812 in words is "twenty-two million, fifty-four thousand, eight hundred twelve".