23045643 has 12 divisors (see below), whose sum is σ = 33710560. Its totient is φ = 15168816.

The previous prime is 23045639. The next prime is 23045647. The reversal of 23045643 is 34654032.

It is an interprime number because it is at equal distance from previous prime (23045639) and next prime (23045647).

It is not a de Polignac number, because 23045643 - 2² = 23045639 is a prime.

It is a super-2 number, since 2×23045643² = 1062203322566898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23045647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15496 + ... + 16917.

Almost surely, 2^23045643 is an apocalyptic number.

23045643 is a deficient number, since it is larger than the sum of its proper divisors (10664917).

23045643 is a wasteful number, since it uses less digits than its factorization.

23045643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32498 (or 32495 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 23045643 is about 4800.5877765124. The cubic root of 23045643 is about 284.5746934223.

Adding to 23045643 its reverse (34654032), we get a palindrome (57699675).

The spelling of 23045643 in words is "twenty-three million, forty-five thousand, six hundred forty-three".