22393643 has 2 divisors, whose sum is σ = 22393644. Its totient is φ = 22393642.

The previous prime is 22393601. The next prime is 22393663. The reversal of 22393643 is 34639322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22393643 - 2¹² = 22389547 is a prime.

It is a super-2 number, since 2×22393643² = 1002950493622898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22393663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11196821 + 11196822.

It is an arithmetic number, because the mean of its divisors is an integer number (11196822).

Almost surely, 2^22393643 is an apocalyptic number.

22393643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22393643 is an equidigital number, since it uses as much as digits as its factorization.

22393643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 32.

The square root of 22393643 is about 4732.1921981255. The cubic root of 22393643 is about 281.8652802846.

The spelling of 22393643 in words is "twenty-two million, three hundred ninety-three thousand, six hundred forty-three".