22743643 has 16 divisors (see below), whose sum is σ = 25486272. Its totient is φ = 20160000.

The previous prime is 22743607. The next prime is 22743649. The reversal of 22743643 is 34634722.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22743643 is a prime.

It is a super-2 number, since 2×22743643² = 1034546593822898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22743649) 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 15 ways as a sum of consecutive naturals, for example, 37543 + ... + 38143.

It is an arithmetic number, because the mean of its divisors is an integer number (1592892).

Almost surely, 2^22743643 is an apocalyptic number.

22743643 is a deficient number, since it is larger than the sum of its proper divisors (2742629).

22743643 is a wasteful number, since it uses less digits than its factorization.

22743643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726.

The product of its digits is 24192, while the sum is 31.

The square root of 22743643 is about 4769.0295658551. The cubic root of 22743643 is about 283.3261606796.

The spelling of 22743643 in words is "twenty-two million, seven hundred forty-three thousand, six hundred forty-three".