27980364 has 12 divisors (see below), whose sum is σ = 65287544. Its totient is φ = 9326784.

The previous prime is 27980363. The next prime is 27980371. The reversal of 27980364 is 46308972.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (27980363) 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, 1165837 + ... + 1165860.

Almost surely, 2^27980364 is an apocalyptic number.

It is an amenable number.

27980364 is an abundant number, since it is smaller than the sum of its proper divisors (37307180).

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

27980364 is a wasteful number, since it uses less digits than its factorization.

27980364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331704 (or 2331702 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 27980364 is about 5289.6468691208. The cubic root of 27980364 is about 303.5878967056.

It can be divided in two parts, 279 and 80364, that multiplied together give a triangular number (22421556 = T₆₆₉₆).

The spelling of 27980364 in words is "twenty-seven million, nine hundred eighty thousand, three hundred sixty-four".