23286905 has 4 divisors (see below), whose sum is σ = 27944292. Its totient is φ = 18629520.

The previous prime is 23286883. The next prime is 23286931. The reversal of 23286905 is 50968232.

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 3644281 + 19642624 = 1909^2 + 4432^2 .

It is not a de Polignac number, because 23286905 - 2¹⁶ = 23221369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2328686 + ... + 2328695.

It is an arithmetic number, because the mean of its divisors is an integer number (6986073).

Almost surely, 2^23286905 is an apocalyptic number.

It is an amenable number.

23286905 is a deficient number, since it is larger than the sum of its proper divisors (4657387).

23286905 is an equidigital number, since it uses as much as digits as its factorization.

23286905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657386.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 23286905 is about 4825.6507333208. The cubic root of 23286905 is about 285.5643071792.

The spelling of 23286905 in words is "twenty-three million, two hundred eighty-six thousand, nine hundred five".