27275840 has 28 divisors (see below), whose sum is σ = 64951356. Its totient is φ = 10910208.

The previous prime is 27275819. The next prime is 27275851. The reversal of 27275840 is 4857272.

It can be written as a sum of positive squares in 2 ways, for example, as 14258176 + 13017664 = 3776^2 + 3608^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27275840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42299 + ... + 42938.

Almost surely, 2^27275840 is an apocalyptic number.

27275840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27275840 is an abundant number, since it is smaller than the sum of its proper divisors (37675516).

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

27275840 is an equidigital number, since it uses as much as digits as its factorization.

27275840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85254 (or 85244 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 27275840 is about 5222.6276911149. The cubic root of 27275840 is about 301.0181701521.

The spelling of 27275840 in words is "twenty-seven million, two hundred seventy-five thousand, eight hundred forty".