1986888 has 16 divisors (see below), whose sum is σ = 4967280. Its totient is φ = 662288.

The previous prime is 1986871. The next prime is 1986889. The reversal of 1986888 is 8886891.

It is not an unprimeable number, because it can be changed into a prime (1986889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41370 + ... + 41417.

It is an arithmetic number, because the mean of its divisors is an integer number (310455).

2^1986888 is an apocalyptic number.

It is an amenable number.

1986888 is an abundant number, since it is smaller than the sum of its proper divisors (2980392).

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

1986888 is a wasteful number, since it uses less digits than its factorization.

1986888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82796 (or 82792 counting only the distinct ones).

The product of its digits is 221184, while the sum is 48.

The square root of 1986888 is about 1409.5701472435. The cubic root of 1986888 is about 125.7161663434.

The spelling of 1986888 in words is "one million, nine hundred eighty-six thousand, eight hundred eighty-eight".