27800118 has 32 divisors (see below), whose sum is σ = 63774720. Its totient is φ = 8967240.

The previous prime is 27800107. The next prime is 27800131. The reversal of 27800118 is 81100872.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 27800091 and 27800100.

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 15 ways as a sum of consecutive naturals, for example, 6630 + ... + 9977.

It is an arithmetic number, because the mean of its divisors is an integer number (1992960).

Almost surely, 2^27800118 is an apocalyptic number.

27800118 is an abundant number, since it is smaller than the sum of its proper divisors (35974602).

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

27800118 is a wasteful number, since it uses less digits than its factorization.

27800118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16649 (or 16643 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 27800118 is about 5272.5817205616. The cubic root of 27800118 is about 302.9346001385.

The spelling of 27800118 in words is "twenty-seven million, eight hundred thousand, one hundred eighteen".