27884140 has 24 divisors (see below), whose sum is σ = 58902480. Its totient is φ = 11087808.

The previous prime is 27884123. The next prime is 27884147. The reversal of 27884140 is 4148872.

It is a junction number, because it is equal to n+sod(n) for n = 27884096 and 27884105.

It is not an unprimeable number, because it can be changed into a prime (27884147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (2454270).

Almost surely, 2^27884140 is an apocalyptic number.

27884140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27884140 is an abundant number, since it is smaller than the sum of its proper divisors (31018340).

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

27884140 is a wasteful number, since it uses less digits than its factorization.

27884140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8241 (or 8239 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 27884140 is about 5280.5435326300. The cubic root of 27884140 is about 303.2394857875.

The spelling of 27884140 in words is "twenty-seven million, eight hundred eighty-four thousand, one hundred forty".