22047129 has 12 divisors (see below), whose sum is σ = 34295716. Its totient is φ = 13567392.

The previous prime is 22047127. The next prime is 22047139. The reversal of 22047129 is 92174022.

It can be written as a sum of positive squares in 2 ways, for example, as 14837904 + 7209225 = 3852^2 + 2685^2 .

It is not a de Polignac number, because 22047129 - 2¹ = 22047127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22047121) 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 11 ways as a sum of consecutive naturals, for example, 94102 + ... + 94335.

Almost surely, 2^22047129 is an apocalyptic number.

It is an amenable number.

22047129 is a deficient number, since it is larger than the sum of its proper divisors (12248587).

22047129 is a wasteful number, since it uses less digits than its factorization.

22047129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188456 (or 188453 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 22047129 is about 4695.4370403616. The cubic root of 22047129 is about 280.4038771940.

The spelling of 22047129 in words is "twenty-two million, forty-seven thousand, one hundred twenty-nine".