23189885 has 8 divisors (see below), whose sum is σ = 28353240. Its totient is φ = 18201664.

The previous prime is 23189867. The next prime is 23189893. The reversal of 23189885 is 58898132.

It can be written as a sum of positive squares in 4 ways, for example, as 10876804 + 12313081 = 3298^2 + 3509^2 .

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 23189885 - 2²⁰ = 22141309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43490 + ... + 44019.

It is an arithmetic number, because the mean of its divisors is an integer number (3544155).

Almost surely, 2^23189885 is an apocalyptic number.

It is an amenable number.

23189885 is a deficient number, since it is larger than the sum of its proper divisors (5163355).

23189885 is an equidigital number, since it uses as much as digits as its factorization.

23189885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87567.

The product of its digits is 138240, while the sum is 44.

The square root of 23189885 is about 4815.5877107576. The cubic root of 23189885 is about 285.1671739019.

The spelling of 23189885 in words is "twenty-three million, one hundred eighty-nine thousand, eight hundred eighty-five".