27998616 has 16 divisors (see below), whose sum is σ = 69996600. Its totient is φ = 9332864.

The previous prime is 27998591. The next prime is 27998617. The reversal of 27998616 is 61689972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27998617) 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, 583281 + ... + 583328.

Almost surely, 2^27998616 is an apocalyptic number.

It is an amenable number.

27998616 is an abundant number, since it is smaller than the sum of its proper divisors (41997984).

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

27998616 is a wasteful number, since it uses less digits than its factorization.

27998616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166618 (or 1166614 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 27998616 is about 5291.3718448055. The cubic root of 27998616 is about 303.6538939633.

The spelling of 27998616 in words is "twenty-seven million, nine hundred ninety-eight thousand, six hundred sixteen".