27840180 has 24 divisors (see below), whose sum is σ = 77952672. Its totient is φ = 7424032.

The previous prime is 27840173. The next prime is 27840193. The reversal of 27840180 is 8104872.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 231942 + ... + 232061.

It is an arithmetic number, because the mean of its divisors is an integer number (3248028).

Almost surely, 2^27840180 is an apocalyptic number.

27840180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27840180 is an abundant number, since it is smaller than the sum of its proper divisors (50112492).

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

27840180 is a wasteful number, since it uses less digits than its factorization.

27840180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464015 (or 464013 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 27840180 is about 5276.3794404876. The cubic root of 27840180 is about 303.0800472539.

The spelling of 27840180 in words is "twenty-seven million, eight hundred forty thousand, one hundred eighty".