1990960 has 40 divisors (see below), whose sum is σ = 4749696. Its totient is φ = 775680.

The previous prime is 1990957. The next prime is 1990969. The reversal of 1990960 is 690991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1990969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2977 + ... + 3583.

2^1990960 is an apocalyptic number.

1990960 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 1990960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2374848).

1990960 is an abundant number, since it is smaller than the sum of its proper divisors (2758736).

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

1990960 is a wasteful number, since it uses less digits than its factorization.

1990960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 1990960 is about 1411.0138199181. The cubic root of 1990960 is about 125.8019901566.

The spelling of 1990960 in words is "one million, nine hundred ninety thousand, nine hundred sixty".