27275440 has 40 divisors (see below), whose sum is σ = 63656640. Its totient is φ = 10868736.

The previous prime is 27275419. The next prime is 27275441. The reversal of 27275440 is 4457272.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (27275441) 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, 28896 + ... + 29824.

It is an arithmetic number, because the mean of its divisors is an integer number (1591416).

Almost surely, 2^27275440 is an apocalyptic number.

27275440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27275440 is an abundant number, since it is smaller than the sum of its proper divisors (36381200).

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

27275440 is a wasteful number, since it uses less digits than its factorization.

27275440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 27275440 is about 5222.5893960755. The cubic root of 27275440 is about 301.0166986685.

The spelling of 27275440 in words is "twenty-seven million, two hundred seventy-five thousand, four hundred forty".