23285 has 4 divisors (see below), whose sum is σ = 27948. Its totient is φ = 18624.

The previous prime is 23279. The next prime is 23291. The reversal of 23285 is 58232.

23285 = T_{94} + T_{95} + ... +
T_{98}.

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

It is an interprime number because it is at equal distance from previous prime (23279) and next prime (23291).

It can be written as a sum of positive squares in 2 ways, for example, as 5329 + 17956 = 73^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 23285 - 2^{4} = 23269 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

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, 2324 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (6987).

2^{23285} is an apocalyptic number.

It is an amenable number.

23285 is a deficient number, since it is larger than the sum of its proper divisors (4663).

23285 is an equidigital number, since it uses as much as digits as its factorization.

23285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662.

The product of its digits is 480, while the sum is 20.

The square root of 23285 is about 152.5942331807. The cubic root of 23285 is about 28.5556520044. Note that the first 3 decimals are identical.

It can be divided in two parts, 23 and 285, that multiplied together give a triangular number (6555 = T_{114}).

The spelling of 23285 in words is "twenty-three thousand, two hundred eighty-five".

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