23426643 has 8 divisors (see below), whose sum is σ = 31460800. Its totient is φ = 15505128.

The previous prime is 23426609. The next prime is 23426651. The reversal of 23426643 is 34662432.

It is a happy number.

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

It is not a de Polignac number, because 23426643 - 2⁹ = 23426131 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 23426643.

It is not an unprimeable number, because it can be changed into a prime (23426603) 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, 27673 + ... + 28506.

It is an arithmetic number, because the mean of its divisors is an integer number (3932600).

Almost surely, 2^23426643 is an apocalyptic number.

23426643 is a deficient number, since it is larger than the sum of its proper divisors (8034157).

23426643 is a wasteful number, since it uses less digits than its factorization.

23426643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56321.

The product of its digits is 20736, while the sum is 30.

The square root of 23426643 is about 4840.1077467346. The cubic root of 23426643 is about 286.1343647910.

The spelling of 23426643 in words is "twenty-three million, four hundred twenty-six thousand, six hundred forty-three".