27398886 has 8 divisors (see below), whose sum is σ = 54797784. Its totient is φ = 9132960.

The previous prime is 27398863. The next prime is 27398887. The reversal of 27398886 is 68889372.

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

27398886 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27398887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2283235 + ... + 2283246.

It is an arithmetic number, because the mean of its divisors is an integer number (6849723).

Almost surely, 2^27398886 is an apocalyptic number.

27398886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27398886 is a wasteful number, since it uses less digits than its factorization.

27398886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566486.

The product of its digits is 1161216, while the sum is 51.

The square root of 27398886 is about 5234.3945208591. The cubic root of 27398886 is about 301.4701394209.

The spelling of 27398886 in words is "twenty-seven million, three hundred ninety-eight thousand, eight hundred eighty-six".