27820216 has 8 divisors (see below), whose sum is σ = 52162920. Its totient is φ = 13910104.

The previous prime is 27820171. The next prime is 27820217. The reversal of 27820216 is 61202872.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27820217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1738756 + ... + 1738771.

It is an arithmetic number, because the mean of its divisors is an integer number (6520365).

Almost surely, 2^27820216 is an apocalyptic number.

It is an amenable number.

27820216 is a deficient number, since it is larger than the sum of its proper divisors (24342704).

27820216 is a wasteful number, since it uses less digits than its factorization.

27820216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477533 (or 3477529 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 27820216 is about 5274.4872736599. The cubic root of 27820216 is about 303.0075843970.

The spelling of 27820216 in words is "twenty-seven million, eight hundred twenty thousand, two hundred sixteen".