27081389 has 8 divisors (see below), whose sum is σ = 28080000. Its totient is φ = 26087152.

The previous prime is 27081371. The next prime is 27081407. The reversal of 27081389 is 98318072.

It is an interprime number because it is at equal distance from previous prime (27081371) and next prime (27081407).

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 27081389 - 2¹² = 27077293 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 (27081319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16592 + ... + 18150.

It is an arithmetic number, because the mean of its divisors is an integer number (3510000).

Almost surely, 2^27081389 is an apocalyptic number.

27081389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

27081389 is a deficient number, since it is larger than the sum of its proper divisors (998611).

27081389 is a wasteful number, since it uses less digits than its factorization.

27081389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 27081389 is about 5203.9781898083. The cubic root of 27081389 is about 300.3011383586.

The spelling of 27081389 in words is "twenty-seven million, eighty-one thousand, three hundred eighty-nine".