22192812 has 48 divisors (see below), whose sum is σ = 58414720. Its totient is φ = 7284816.

The previous prime is 22192811. The next prime is 22192813. The reversal of 22192812 is 21829122.

It is an interprime number because it is at equal distance from previous prime (22192811) and next prime (22192813).

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

It is not an unprimeable number, because it can be changed into a prime (22192811) 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, 5703 + ... + 8769.

Almost surely, 2^22192812 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 22192812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29207360).

22192812 is an abundant number, since it is smaller than the sum of its proper divisors (36221908).

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

22192812 is a wasteful number, since it uses less digits than its factorization.

22192812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147 (or 3139 counting only the distinct ones).

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

The square root of 22192812 is about 4710.9247499827. The cubic root of 22192812 is about 281.0201393012.

The spelling of 22192812 in words is "twenty-two million, one hundred ninety-two thousand, eight hundred twelve".