27540620 has 12 divisors (see below), whose sum is σ = 57835344. Its totient is φ = 11016240.

The previous prime is 27540619. The next prime is 27540631. The reversal of 27540620 is 2604572.

It is a self number, because there is not a number n which added to its sum of digits gives 27540620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688496 + ... + 688535.

It is an arithmetic number, because the mean of its divisors is an integer number (4819612).

Almost surely, 2^27540620 is an apocalyptic number.

27540620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27540620 is an abundant number, since it is smaller than the sum of its proper divisors (30294724).

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

27540620 is a wasteful number, since it uses less digits than its factorization.

27540620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377040 (or 1377038 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 27540620 is about 5247.9157767632. The cubic root of 27540620 is about 301.9890790314.

The spelling of 27540620 in words is "twenty-seven million, five hundred forty thousand, six hundred twenty".