23012789 has 4 divisors (see below), whose sum is σ = 23216556. Its totient is φ = 22809024.

The previous prime is 23012761. The next prime is 23012791. The reversal of 23012789 is 98721032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 13140625 = 3142^2 + 3625^2 .

It is a cyclic number.

It is not a de Polignac number, because 23012789 - 2⁸ = 23012533 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012089) 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, 101714 + ... + 101939.

It is an arithmetic number, because the mean of its divisors is an integer number (5804139).

Almost surely, 2^23012789 is an apocalyptic number.

It is an amenable number.

23012789 is a deficient number, since it is larger than the sum of its proper divisors (203767).

23012789 is a wasteful number, since it uses less digits than its factorization.

23012789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203766.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 23012789 is about 4797.1646834354. The cubic root of 23012789 is about 284.4393986746.

The spelling of 23012789 in words is "twenty-three million, twelve thousand, seven hundred eighty-nine".