27678223 has 8 divisors (see below), whose sum is σ = 28963296. Its totient is φ = 26400000.

The previous prime is 27678181. The next prime is 27678241. The reversal of 27678223 is 32287672.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 27678223 - 2⁹ = 27677711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27678293) 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, 7723 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (3620412).

Almost surely, 2^27678223 is an apocalyptic number.

27678223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

27678223 is a deficient number, since it is larger than the sum of its proper divisors (1285073).

27678223 is a wasteful number, since it uses less digits than its factorization.

27678223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425.

The product of its digits is 56448, while the sum is 37.

The square root of 27678223 is about 5261.0096939656. The cubic root of 27678223 is about 302.4911929681.

The spelling of 27678223 in words is "twenty-seven million, six hundred seventy-eight thousand, two hundred twenty-three".