27984330 has 96 divisors (see below), whose sum is σ = 82892160. Its totient is φ = 6483840.

The previous prime is 27984301. The next prime is 27984343. The reversal of 27984330 is 3348972.

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 47 ways as a sum of consecutive naturals, for example, 22156 + ... + 23384.

It is an arithmetic number, because the mean of its divisors is an integer number (863460).

Almost surely, 2^27984330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27984330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41446080).

27984330 is an abundant number, since it is smaller than the sum of its proper divisors (54907830).

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

27984330 is a wasteful number, since it uses less digits than its factorization.

27984330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 27984330 is about 5290.0217390858. The cubic root of 27984330 is about 303.6022397727.

The spelling of 27984330 in words is "twenty-seven million, nine hundred eighty-four thousand, three hundred thirty".