27287213 has 8 divisors (see below), whose sum is σ = 27941760. Its totient is φ = 26635840.

The previous prime is 27287189. The next prime is 27287219. The reversal of 27287213 is 31278272.

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

It is not a de Polignac number, because 27287213 - 2⁸ = 27286957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27287213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27287219) by changing a digit.

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, 30533 + ... + 31413.

It is an arithmetic number, because the mean of its divisors is an integer number (3492720).

Almost surely, 2^27287213 is an apocalyptic number.

It is an amenable number.

27287213 is a deficient number, since it is larger than the sum of its proper divisors (654547).

27287213 is an equidigital number, since it uses as much as digits as its factorization.

27287213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587.

The product of its digits is 9408, while the sum is 32.

The square root of 27287213 is about 5223.7163973554. The cubic root of 27287213 is about 301.0600020925.

The spelling of 27287213 in words is "twenty-seven million, two hundred eighty-seven thousand, two hundred thirteen".