27028281 has 8 divisors (see below), whose sum is σ = 41185984. Its totient is φ = 15444720.

The previous prime is 27028277. The next prime is 27028291. The reversal of 27028281 is 18282072.

It is a happy number.

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

It is not a de Polignac number, because 27028281 - 2² = 27028277 is a prime.

It is a super-2 number, since 2×27028281² = 1461055947629922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27028201) 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, 643510 + ... + 643551.

It is an arithmetic number, because the mean of its divisors is an integer number (5148248).

Almost surely, 2^27028281 is an apocalyptic number.

27028281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27028281 is a deficient number, since it is larger than the sum of its proper divisors (14157703).

27028281 is a wasteful number, since it uses less digits than its factorization.

27028281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287071.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 27028281 is about 5198.8730509602. The cubic root of 27028281 is about 300.1047078944.

The spelling of 27028281 in words is "twenty-seven million, twenty-eight thousand, two hundred eighty-one".