27952865 has 4 divisors (see below), whose sum is σ = 33543444. Its totient is φ = 22362288.

The previous prime is 27952849. The next prime is 27952891. The reversal of 27952865 is 56825972.

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 16777216 + 11175649 = 4096^2 + 3343^2 .

It is a cyclic number.

It is not a de Polignac number, because 27952865 - 2⁴ = 27952849 is a prime.

It is a Duffinian 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, 2795282 + ... + 2795291.

It is an arithmetic number, because the mean of its divisors is an integer number (8385861).

Almost surely, 2^27952865 is an apocalyptic number.

It is an amenable number.

27952865 is a deficient number, since it is larger than the sum of its proper divisors (5590579).

27952865 is an equidigital number, since it uses as much as digits as its factorization.

27952865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590578.

The product of its digits is 302400, while the sum is 44.

The square root of 27952865 is about 5287.0469073009. The cubic root of 27952865 is about 303.4884090794.

The spelling of 27952865 in words is "twenty-seven million, nine hundred fifty-two thousand, eight hundred sixty-five".