27673840 has 20 divisors (see below), whose sum is σ = 64341864. Its totient is φ = 11069504.

The previous prime is 27673831. The next prime is 27673871. The reversal of 27673840 is 4837672.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 27673840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172882 + ... + 173041.

Almost surely, 2^27673840 is an apocalyptic number.

27673840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27673840 is an abundant number, since it is smaller than the sum of its proper divisors (36668024).

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

27673840 is a wasteful number, since it uses less digits than its factorization.

27673840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345936 (or 345930 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 27673840 is about 5260.5931224530. The cubic root of 27673840 is about 302.4752250729.

The spelling of 27673840 in words is "twenty-seven million, six hundred seventy-three thousand, eight hundred forty".