22366919 has 4 divisors (see below), whose sum is σ = 22447944. Its totient is φ = 22285896.

The previous prime is 22366913. The next prime is 22366921. The reversal of 22366919 is 91966322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22366919 - 2²⁰ = 21318343 is a prime.

It is a super-2 number, since 2×22366919² = 1000558131105122, 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 (22366913) 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 3 ways as a sum of consecutive naturals, for example, 40097 + ... + 40650.

It is an arithmetic number, because the mean of its divisors is an integer number (5611986).

Almost surely, 2^22366919 is an apocalyptic number.

22366919 is a deficient number, since it is larger than the sum of its proper divisors (81025).

22366919 is an equidigital number, since it uses as much as digits as its factorization.

22366919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81024.

The product of its digits is 34992, while the sum is 38.

The square root of 22366919 is about 4729.3677167249. The cubic root of 22366919 is about 281.7531120511.

The spelling of 22366919 in words is "twenty-two million, three hundred sixty-six thousand, nine hundred nineteen".