27728824 has 8 divisors (see below), whose sum is σ = 51991560. Its totient is φ = 13864408.

The previous prime is 27728803. The next prime is 27728839. The reversal of 27728824 is 42882772.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1733044 + ... + 1733059.

It is an arithmetic number, because the mean of its divisors is an integer number (6498945).

Almost surely, 2^27728824 is an apocalyptic number.

It is an amenable number.

27728824 is a deficient number, since it is larger than the sum of its proper divisors (24262736).

27728824 is a wasteful number, since it uses less digits than its factorization.

27728824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466109 (or 3466105 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 27728824 is about 5265.8165558629. The cubic root of 27728824 is about 302.6754176885.

The spelling of 27728824 in words is "twenty-seven million, seven hundred twenty-eight thousand, eight hundred twenty-four".