27968556 has 48 divisors (see below), whose sum is σ = 81365760. Its totient is φ = 7264320.

The previous prime is 27968527. The next prime is 27968573. The reversal of 27968556 is 65586972.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 14211 + ... + 16058.

It is an arithmetic number, because the mean of its divisors is an integer number (1695120).

Almost surely, 2^27968556 is an apocalyptic number.

It is an amenable number.

27968556 is an abundant number, since it is smaller than the sum of its proper divisors (53397204).

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

27968556 is a wasteful number, since it uses less digits than its factorization.

27968556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30294 (or 30292 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 27968556 is about 5288.5306087797. The cubic root of 27968556 is about 303.5451849635.

The spelling of 27968556 in words is "twenty-seven million, nine hundred sixty-eight thousand, five hundred fifty-six".