27864080 has 40 divisors (see below), whose sum is σ = 65025600. Its totient is φ = 11104128.

The previous prime is 27864077. The next prime is 27864097. The reversal of 27864080 is 8046872.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 27864080.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29861 + ... + 30779.

It is an arithmetic number, because the mean of its divisors is an integer number (1625640).

Almost surely, 2^27864080 is an apocalyptic number.

27864080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27864080 is an abundant number, since it is smaller than the sum of its proper divisors (37161520).

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

27864080 is a wasteful number, since it uses less digits than its factorization.

27864080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 27864080 is about 5278.6437652109. The cubic root of 27864080 is about 303.1667509714.

The spelling of 27864080 in words is "twenty-seven million, eight hundred sixty-four thousand, eighty".