23128743 has 8 divisors (see below), whose sum is σ = 33641856. Its totient is φ = 14017400.

The previous prime is 23128733. The next prime is 23128793. The reversal of 23128743 is 34782132.

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

It is a cyclic number.

It is not a de Polignac number, because 23128743 - 2¹³ = 23120551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23128743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23128733) 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 7 ways as a sum of consecutive naturals, for example, 350403 + ... + 350468.

It is an arithmetic number, because the mean of its divisors is an integer number (4205232).

Almost surely, 2^23128743 is an apocalyptic number.

23128743 is a deficient number, since it is larger than the sum of its proper divisors (10513113).

23128743 is a wasteful number, since it uses less digits than its factorization.

23128743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700885.

The product of its digits is 8064, while the sum is 30.

The square root of 23128743 is about 4809.2351782794. The cubic root of 23128743 is about 284.9163312412.

It can be divided in two parts, 23128 and 743, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 23128743 in words is "twenty-three million, one hundred twenty-eight thousand, seven hundred forty-three".