22128969 has 4 divisors (see below), whose sum is σ = 29505296. Its totient is φ = 14752644.

The previous prime is 22128941. The next prime is 22128973. The reversal of 22128969 is 96982122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22128969 - 2⁵ = 22128937 is a prime.

It is a super-2 number, since 2×22128969² = 979382538005922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22128919) 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 3 ways as a sum of consecutive naturals, for example, 3688159 + ... + 3688164.

It is an arithmetic number, because the mean of its divisors is an integer number (7376324).

Almost surely, 2^22128969 is an apocalyptic number.

It is an amenable number.

22128969 is a deficient number, since it is larger than the sum of its proper divisors (7376327).

22128969 is an equidigital number, since it uses as much as digits as its factorization.

22128969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7376326.

The product of its digits is 31104, while the sum is 39.

The square root of 22128969 is about 4704.1438115772. The cubic root of 22128969 is about 280.7504063152.

The spelling of 22128969 in words is "twenty-two million, one hundred twenty-eight thousand, nine hundred sixty-nine".