27982465 has 16 divisors (see below), whose sum is σ = 39270528. Its totient is φ = 18740736.

The previous prime is 27982457. The next prime is 27982499. The reversal of 27982465 is 56428972.

It is not a de Polignac number, because 27982465 - 2³ = 27982457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 15 ways as a sum of consecutive naturals, for example, 7792 + ... + 10801.

It is an arithmetic number, because the mean of its divisors is an integer number (2454408).

Almost surely, 2^27982465 is an apocalyptic number.

It is an amenable number.

27982465 is a deficient number, since it is larger than the sum of its proper divisors (11288063).

27982465 is a wasteful number, since it uses less digits than its factorization.

27982465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18648.

The product of its digits is 241920, while the sum is 43.

The square root of 27982465 is about 5289.8454608807. The cubic root of 27982465 is about 303.5954951558.

The spelling of 27982465 in words is "twenty-seven million, nine hundred eighty-two thousand, four hundred sixty-five".