27485540 has 12 divisors (see below), whose sum is σ = 57719676. Its totient is φ = 10994208.

The previous prime is 27485537. The next prime is 27485543. The reversal of 27485540 is 4558472.

It is an interprime number because it is at equal distance from previous prime (27485537) and next prime (27485543).

It can be written as a sum of positive squares in 2 ways, for example, as 12166144 + 15319396 = 3488^2 + 3914^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27485540.

It is not an unprimeable number, because it can be changed into a prime (27485543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687119 + ... + 687158.

It is an arithmetic number, because the mean of its divisors is an integer number (4809973).

Almost surely, 2^27485540 is an apocalyptic number.

27485540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27485540 is an abundant number, since it is smaller than the sum of its proper divisors (30234136).

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

27485540 is a wasteful number, since it uses less digits than its factorization.

27485540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374286 (or 1374284 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 27485540 is about 5242.6653526618. The cubic root of 27485540 is about 301.7876231504.

The spelling of 27485540 in words is "twenty-seven million, four hundred eighty-five thousand, five hundred forty".