23128033 has 4 divisors (see below), whose sum is σ = 23406768. Its totient is φ = 22849300.

The previous prime is 23128031. The next prime is 23128069. The reversal of 23128033 is 33082132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23128033 - 2¹ = 23128031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23127995 and 23128013.

It is not an unprimeable number, because it can be changed into a prime (23128031) 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 3 ways as a sum of consecutive naturals, for example, 139243 + ... + 139408.

It is an arithmetic number, because the mean of its divisors is an integer number (5851692).

Almost surely, 2^23128033 is an apocalyptic number.

It is an amenable number.

23128033 is a deficient number, since it is larger than the sum of its proper divisors (278735).

23128033 is an equidigital number, since it uses as much as digits as its factorization.

23128033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278734.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23128033 is about 4809.1613614018. The cubic root of 23128033 is about 284.9134157828.

The spelling of 23128033 in words is "twenty-three million, one hundred twenty-eight thousand, thirty-three".