22427812 has 12 divisors (see below), whose sum is σ = 42816816. Its totient is φ = 10194440.

The previous prime is 22427753. The next prime is 22427837. The reversal of 22427812 is 21872422.

It is a super-2 number, since 2×22427812² = 1006013502214688, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 254818 + ... + 254905.

It is an arithmetic number, because the mean of its divisors is an integer number (3568068).

Almost surely, 2^22427812 is an apocalyptic number.

22427812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22427812 is a deficient number, since it is larger than the sum of its proper divisors (20389004).

22427812 is a wasteful number, since it uses less digits than its factorization.

22427812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509738 (or 509736 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 22427812 is about 4735.8010937961. The cubic root of 22427812 is about 282.0085673839.

The spelling of 22427812 in words is "twenty-two million, four hundred twenty-seven thousand, eight hundred twelve".