23120285 has 4 divisors (see below), whose sum is σ = 27744348. Its totient is φ = 18496224.

The previous prime is 23120249. The next prime is 23120299. The reversal of 23120285 is 58202132.

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 4853209 + 18267076 = 2203^2 + 4274^2 .

It is a cyclic number.

It is not a de Polignac number, because 23120285 - 2⁸ = 23120029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23120285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312024 + ... + 2312033.

It is an arithmetic number, because the mean of its divisors is an integer number (6936087).

Almost surely, 2^23120285 is an apocalyptic number.

It is an amenable number.

23120285 is a deficient number, since it is larger than the sum of its proper divisors (4624063).

23120285 is an equidigital number, since it uses as much as digits as its factorization.

23120285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624062.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 23120285 is about 4808.3557480702. The cubic root of 23120285 is about 284.8815964505.

The spelling of 23120285 in words is "twenty-three million, one hundred twenty thousand, two hundred eighty-five".