27883980 has 48 divisors (see below), whose sum is σ = 86751840. Its totient is φ = 7435584.

The previous prime is 27883969. The next prime is 27883987. The reversal of 27883980 is 8938872.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (27883987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25279 + ... + 26358.

It is an arithmetic number, because the mean of its divisors is an integer number (1807330).

Almost surely, 2^27883980 is an apocalyptic number.

27883980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27883980 is an abundant number, since it is smaller than the sum of its proper divisors (58867860).

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

27883980 is a wasteful number, since it uses less digits than its factorization.

27883980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51655 (or 51647 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 27883980 is about 5280.5283826526. The cubic root of 27883980 is about 303.2389057874.

The spelling of 27883980 in words is "twenty-seven million, eight hundred eighty-three thousand, nine hundred eighty".