27956465 has 8 divisors (see below), whose sum is σ = 34366248. Its totient is φ = 21819520.

The previous prime is 27956459. The next prime is 27956471. The reversal of 27956465 is 56465972.

It is an interprime number because it is at equal distance from previous prime (27956459) and next prime (27956471).

It can be written as a sum of positive squares in 4 ways, for example, as 1495729 + 26460736 = 1223^2 + 5144^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27956465 - 2⁸ = 27956209 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 7 ways as a sum of consecutive naturals, for example, 67982 + ... + 68391.

It is an arithmetic number, because the mean of its divisors is an integer number (4295781).

Almost surely, 2^27956465 is an apocalyptic number.

It is an amenable number.

27956465 is a deficient number, since it is larger than the sum of its proper divisors (6409783).

27956465 is a wasteful number, since it uses less digits than its factorization.

27956465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136419.

The product of its digits is 453600, while the sum is 44.

The square root of 27956465 is about 5287.3873510459. The cubic root of 27956465 is about 303.5014370985.

The spelling of 27956465 in words is "twenty-seven million, nine hundred fifty-six thousand, four hundred sixty-five".