1986368 has 28 divisors (see below), whose sum is σ = 4043172. Its totient is φ = 967680.

The previous prime is 1986359. The next prime is 1986373. The reversal of 1986368 is 8636891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 565504 + 1420864 = 752^2 + 1192^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246 + ... + 3002.

It is an arithmetic number, because the mean of its divisors is an integer number (144399).

2^1986368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1986368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021586).

1986368 is an abundant number, since it is smaller than the sum of its proper divisors (2056804).

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

1986368 is an equidigital number, since it uses as much as digits as its factorization.

1986368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 800 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 1986368 is about 1409.3856817777. The cubic root of 1986368 is about 125.7051980837.

The spelling of 1986368 in words is "one million, nine hundred eighty-six thousand, three hundred sixty-eight".