27028540 has 48 divisors (see below), whose sum is σ = 70769664. Its totient is φ = 8424000.

The previous prime is 27028531. The next prime is 27028543. The reversal of 27028540 is 4582072.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 27028499 and 27028508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27028543) 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 15 ways as a sum of consecutive naturals, for example, 7236 + ... + 10315.

It is an arithmetic number, because the mean of its divisors is an integer number (1474368).

Almost surely, 2^27028540 is an apocalyptic number.

27028540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27028540 is an abundant number, since it is smaller than the sum of its proper divisors (43741124).

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

27028540 is a wasteful number, since it uses less digits than its factorization.

27028540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17578 (or 17576 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 27028540 is about 5198.8979601450. The cubic root of 27028540 is about 300.1056664813.

The spelling of 27028540 in words is "twenty-seven million, twenty-eight thousand, five hundred forty".