22427139 has 32 divisors (see below), whose sum is σ = 36311040. Its totient is φ = 12035232.

The previous prime is 22427137. The next prime is 22427161. The reversal of 22427139 is 93172422.

It is not a de Polignac number, because 22427139 - 2¹ = 22427137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22427137) 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 31 ways as a sum of consecutive naturals, for example, 28104 + ... + 28890.

It is an arithmetic number, because the mean of its divisors is an integer number (1134720).

Almost surely, 2^22427139 is an apocalyptic number.

22427139 is a deficient number, since it is larger than the sum of its proper divisors (13883901).

22427139 is a wasteful number, since it uses less digits than its factorization.

22427139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879.

The product of its digits is 6048, while the sum is 30.

The square root of 22427139 is about 4735.7300387585. The cubic root of 22427139 is about 282.0057465757.

The spelling of 22427139 in words is "twenty-two million, four hundred twenty-seven thousand, one hundred thirty-nine".