27842423 has 4 divisors (see below), whose sum is σ = 31819920. Its totient is φ = 23864928.

The previous prime is 27842417. The next prime is 27842459. The reversal of 27842423 is 32424872.

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

It is a cyclic number.

It is not a de Polignac number, because 27842423 - 2¹⁰ = 27841399 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 27842423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27842473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988738 + ... + 1988751.

It is an arithmetic number, because the mean of its divisors is an integer number (7954980).

Almost surely, 2^27842423 is an apocalyptic number.

27842423 is a deficient number, since it is larger than the sum of its proper divisors (3977497).

27842423 is an equidigital number, since it uses as much as digits as its factorization.

27842423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977496.

The product of its digits is 21504, while the sum is 32.

The square root of 27842423 is about 5276.5919872584. The cubic root of 27842423 is about 303.0881864529.

The spelling of 27842423 in words is "twenty-seven million, eight hundred forty-two thousand, four hundred twenty-three".