22780869 has 4 divisors (see below), whose sum is σ = 30374496. Its totient is φ = 15187244.

The previous prime is 22780859. The next prime is 22780873. The reversal of 22780869 is 96808722.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 22780869 - 2⁵ = 22780837 is a prime.

It is a super-2 number, since 2×22780869² = 1037935984790322, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22780869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22780859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3796809 + ... + 3796814.

It is an arithmetic number, because the mean of its divisors is an integer number (7593624).

Almost surely, 2^22780869 is an apocalyptic number.

It is an amenable number.

22780869 is a deficient number, since it is larger than the sum of its proper divisors (7593627).

22780869 is an equidigital number, since it uses as much as digits as its factorization.

22780869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7593626.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 22780869 is about 4772.9308605929. The cubic root of 22780869 is about 283.4806558721.

The spelling of 22780869 in words is "twenty-two million, seven hundred eighty thousand, eight hundred sixty-nine".