23428623 has 4 divisors (see below), whose sum is σ = 31238168. Its totient is φ = 15619080.

The previous prime is 23428621. The next prime is 23428661. The reversal of 23428623 is 32682432.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23428623 - 2¹ = 23428621 is a prime.

It is a super-2 number, since 2×23428623² = 1097800751352258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23428621) 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, 3904768 + ... + 3904773.

It is an arithmetic number, because the mean of its divisors is an integer number (7809542).

Almost surely, 2^23428623 is an apocalyptic number.

23428623 is a deficient number, since it is larger than the sum of its proper divisors (7809545).

23428623 is an equidigital number, since it uses as much as digits as its factorization.

23428623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7809544.

The product of its digits is 13824, while the sum is 30.

The square root of 23428623 is about 4840.3122833140. The cubic root of 23428623 is about 286.1424258418.

The spelling of 23428623 in words is "twenty-three million, four hundred twenty-eight thousand, six hundred twenty-three".