22646939 has 8 divisors (see below), whose sum is σ = 26484480. Its totient is φ = 18959976.

The previous prime is 22646933. The next prime is 22646947. The reversal of 22646939 is 93964622.

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

It is not a de Polignac number, because 22646939 - 2⁸ = 22646683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22646896 and 22646905.

It is not an unprimeable number, because it can be changed into a prime (22646933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37319 + ... + 37920.

It is an arithmetic number, because the mean of its divisors is an integer number (3310560).

Almost surely, 2^22646939 is an apocalyptic number.

22646939 is a deficient number, since it is larger than the sum of its proper divisors (3837541).

22646939 is an equidigital number, since it uses as much as digits as its factorization.

22646939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75289.

The product of its digits is 139968, while the sum is 41.

The square root of 22646939 is about 4758.8800152977. The cubic root of 22646939 is about 282.9240307682.

The spelling of 22646939 in words is "twenty-two million, six hundred forty-six thousand, nine hundred thirty-nine".