1986460 has 36 divisors (see below), whose sum is σ = 4855032. Its totient is φ = 680736.

The previous prime is 1986443. The next prime is 1986461. The reversal of 1986460 is 646891.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986461) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 34 + ... + 1993.

It is an arithmetic number, because the mean of its divisors is an integer number (134862).

2^1986460 is an apocalyptic number.

1986460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1986460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2427516).

1986460 is an abundant number, since it is smaller than the sum of its proper divisors (2868572).

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

1986460 is a wasteful number, since it uses less digits than its factorization.

1986460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1986460 is about 1409.4183197334. The cubic root of 1986460 is about 125.7071387613.

The spelling of 1986460 in words is "one million, nine hundred eighty-six thousand, four hundred sixty".