22428427 has 16 divisors (see below), whose sum is σ = 27302400. Its totient is φ = 18382056.

The previous prime is 22428383. The next prime is 22428431. The reversal of 22428427 is 72482422.

It is not a de Polignac number, because 22428427 - 2²³ = 14039819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22428467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6468 + ... + 9310.

It is an arithmetic number, because the mean of its divisors is an integer number (1706400).

Almost surely, 2^22428427 is an apocalyptic number.

22428427 is a deficient number, since it is larger than the sum of its proper divisors (4873973).

22428427 is an equidigital number, since it uses as much as digits as its factorization.

22428427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2873 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 22428427 is about 4735.8660242874. The cubic root of 22428427 is about 282.0111450418.

The spelling of 22428427 in words is "twenty-two million, four hundred twenty-eight thousand, four hundred twenty-seven".