1986960 has 80 divisors (see below), whose sum is σ = 6535296. Its totient is φ = 497664.

The previous prime is 1986949. The next prime is 1986967. The reversal of 1986960 is 696891.

It is a tau number, because it is divible by the number of its divisors (80).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1986967) 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, 3837 + ... + 4323.

2^1986960 is an apocalyptic number.

1986960 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 1986960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3267648).

1986960 is an abundant number, since it is smaller than the sum of its proper divisors (4548336).

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

1986960 is a wasteful number, since it uses less digits than its factorization.

1986960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1986960 is about 1409.5956867130. The cubic root of 1986960 is about 125.7176848746.

The spelling of 1986960 in words is "one million, nine hundred eighty-six thousand, nine hundred sixty".