27604540 has 12 divisors (see below), whose sum is σ = 57969576. Its totient is φ = 11041808.

The previous prime is 27604529. The next prime is 27604543. The reversal of 27604540 is 4540672.

It is a super-2 number, since 2×27604540² = 1524021257223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27604499 and 27604508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27604543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690094 + ... + 690133.

It is an arithmetic number, because the mean of its divisors is an integer number (4830798).

Almost surely, 2^27604540 is an apocalyptic number.

27604540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27604540 is an abundant number, since it is smaller than the sum of its proper divisors (30365036).

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

27604540 is a wasteful number, since it uses less digits than its factorization.

27604540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380236 (or 1380234 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 27604540 is about 5254.0022839736. The cubic root of 27604540 is about 302.2225308973. Note that the first 3 decimals are identical.

The spelling of 27604540 in words is "twenty-seven million, six hundred four thousand, five hundred forty".