27913143 has 4 divisors (see below), whose sum is σ = 37217528. Its totient is φ = 18608760.

The previous prime is 27913141. The next prime is 27913157. The reversal of 27913143 is 34131972.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27913143 - 2¹ = 27913141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27913143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27913141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4652188 + ... + 4652193.

It is an arithmetic number, because the mean of its divisors is an integer number (9304382).

Almost surely, 2^27913143 is an apocalyptic number.

27913143 is a deficient number, since it is larger than the sum of its proper divisors (9304385).

27913143 is an equidigital number, since it uses as much as digits as its factorization.

27913143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9304384.

The product of its digits is 4536, while the sum is 30.

The square root of 27913143 is about 5283.2890324115. The cubic root of 27913143 is about 303.3445850460.

The spelling of 27913143 in words is "twenty-seven million, nine hundred thirteen thousand, one hundred forty-three".