27840856 has 32 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 13147552.

The previous prime is 27840811. The next prime is 27840863. The reversal of 27840856 is 65804872.

It is a super-2 number, since 2×27840856² = 1550226525625472, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 14361 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (1723680).

Almost surely, 2^27840856 is an apocalyptic number.

It is an amenable number.

27840856 is a deficient number, since it is larger than the sum of its proper divisors (27316904).

27840856 is a wasteful number, since it uses less digits than its factorization.

27840856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 27840856 is about 5276.4434991763. The cubic root of 27840856 is about 303.0825003087.

The spelling of 27840856 in words is "twenty-seven million, eight hundred forty thousand, eight hundred fifty-six".