22893391 has 4 divisors (see below), whose sum is σ = 22922032. Its totient is φ = 22864752.

The previous prime is 22893389. The next prime is 22893397. The reversal of 22893391 is 19339822.

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 22893391 - 2¹ = 22893389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22893391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22893397) 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, 13086 + ... + 14731.

It is an arithmetic number, because the mean of its divisors is an integer number (5730508).

Almost surely, 2^22893391 is an apocalyptic number.

22893391 is a deficient number, since it is larger than the sum of its proper divisors (28641).

22893391 is an equidigital number, since it uses as much as digits as its factorization.

22893391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28640.

The product of its digits is 23328, while the sum is 37.

The square root of 22893391 is about 4784.7038570846. The cubic root of 22893391 is about 283.9466234079.

The spelling of 22893391 in words is "twenty-two million, eight hundred ninety-three thousand, three hundred ninety-one".