23085985 has 16 divisors (see below), whose sum is σ = 30021264. Its totient is φ = 16941312.

The previous prime is 23085967. The next prime is 23085991. The reversal of 23085985 is 58958032.

It can be written as a sum of positive squares in 8 ways, for example, as 7569 + 23078416 = 87^2 + 4804^2 .

It is a cyclic number.

It is not a de Polignac number, because 23085985 - 2⁷ = 23085857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10219 + ... + 12271.

It is an arithmetic number, because the mean of its divisors is an integer number (1876329).

Almost surely, 2^23085985 is an apocalyptic number.

It is an amenable number.

23085985 is a deficient number, since it is larger than the sum of its proper divisors (6935279).

23085985 is a wasteful number, since it uses less digits than its factorization.

23085985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 23085985 is about 4804.7877164345. The cubic root of 23085985 is about 284.7406484349.

The spelling of 23085985 in words is "twenty-three million, eighty-five thousand, nine hundred eighty-five".