22038129 has 8 divisors (see below), whose sum is σ = 32649120. Its totient is φ = 14692068.

The previous prime is 22038113. The next prime is 22038131. The reversal of 22038129 is 92183022.

It is a happy number.

It is not a de Polignac number, because 22038129 - 2⁴ = 22038113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 816227 = 22038129 / (2 + 2 + 0 + 3 + 8 + 1 + 2 + 9).

It is not an unprimeable number, because it can be changed into a prime (22038139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408087 + ... + 408140.

It is an arithmetic number, because the mean of its divisors is an integer number (4081140).

Almost surely, 2^22038129 is an apocalyptic number.

It is an amenable number.

22038129 is a deficient number, since it is larger than the sum of its proper divisors (10610991).

22038129 is an equidigital number, since it uses as much as digits as its factorization.

22038129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816236 (or 816230 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22038129 is about 4694.4785652935. The cubic root of 22038129 is about 280.3657168456.

The spelling of 22038129 in words is "twenty-two million, thirty-eight thousand, one hundred twenty-nine".