22115789 has 4 divisors (see below), whose sum is σ = 22125600. Its totient is φ = 22105980.

The previous prime is 22115783. The next prime is 22115831. The reversal of 22115789 is 98751122.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22115789 - 2¹⁶ = 22050253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22115783) 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, 362 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (5531400).

Almost surely, 2^22115789 is an apocalyptic number.

It is an amenable number.

22115789 is a deficient number, since it is larger than the sum of its proper divisors (9811).

22115789 is an equidigital number, since it uses as much as digits as its factorization.

22115789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9810.

The product of its digits is 10080, while the sum is 35.

The square root of 22115789 is about 4702.7427103766. The cubic root of 22115789 is about 280.6946569906.

It can be divided in two parts, 2211 and 5789, that added together give a cube (8000 = 20³).

The spelling of 22115789 in words is "twenty-two million, one hundred fifteen thousand, seven hundred eighty-nine".