22836921 has 4 divisors (see below), whose sum is σ = 30449232. Its totient is φ = 15224612.

The previous prime is 22836893. The next prime is 22836923. The reversal of 22836921 is 12963822.

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 22836921 - 2⁶ = 22836857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22836923) 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, 3806151 + ... + 3806156.

It is an arithmetic number, because the mean of its divisors is an integer number (7612308).

Almost surely, 2^22836921 is an apocalyptic number.

It is an amenable number.

22836921 is a deficient number, since it is larger than the sum of its proper divisors (7612311).

22836921 is an equidigital number, since it uses as much as digits as its factorization.

22836921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612310.

The product of its digits is 10368, while the sum is 33.

The square root of 22836921 is about 4778.7991169330. The cubic root of 22836921 is about 283.7129654680.

The spelling of 22836921 in words is "twenty-two million, eight hundred thirty-six thousand, nine hundred twenty-one".