27884728 has 16 divisors (see below), whose sum is σ = 52444080. Its totient is φ = 13899648.

The previous prime is 27884719. The next prime is 27884729. The reversal of 27884728 is 82748872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27884729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2476 + ... + 7867.

It is an arithmetic number, because the mean of its divisors is an integer number (3277755).

Almost surely, 2^27884728 is an apocalyptic number.

It is an amenable number.

27884728 is a deficient number, since it is larger than the sum of its proper divisors (24559352).

27884728 is a wasteful number, since it uses less digits than its factorization.

27884728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686 (or 10682 counting only the distinct ones).

The product of its digits is 401408, while the sum is 46.

The square root of 27884728 is about 5280.5992084232. The cubic root of 27884728 is about 303.2416172687.

The spelling of 27884728 in words is "twenty-seven million, eight hundred eighty-four thousand, seven hundred twenty-eight".