22128469 has 8 divisors (see below), whose sum is σ = 24229440. Its totient is φ = 20042400.

The previous prime is 22128443. The next prime is 22128473. The reversal of 22128469 is 96482122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22128469 - 2⁷ = 22128341 is a prime.

It is a super-2 number, since 2×22128469² = 979338280567922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22128409) 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 7 ways as a sum of consecutive naturals, for example, 489 + ... + 6670.

It is an arithmetic number, because the mean of its divisors is an integer number (3028680).

Almost surely, 2^22128469 is an apocalyptic number.

It is an amenable number.

22128469 is a deficient number, since it is larger than the sum of its proper divisors (2100971).

22128469 is a wasteful number, since it uses less digits than its factorization.

22128469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451.

The product of its digits is 13824, while the sum is 34.

The square root of 22128469 is about 4704.0906666432. The cubic root of 22128469 is about 280.7482917980.

The spelling of 22128469 in words is "twenty-two million, one hundred twenty-eight thousand, four hundred sixty-nine".