1983240 has 96 divisors (see below), whose sum is σ = 7375680. Its totient is φ = 452736.

The previous prime is 1983229. The next prime is 1983253. The reversal of 1983240 is 423891.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2127 + ... + 2913.

It is an arithmetic number, because the mean of its divisors is an integer number (76830).

2^1983240 is an apocalyptic number.

1983240 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 1983240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3687840).

1983240 is an abundant number, since it is smaller than the sum of its proper divisors (5392440).

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

1983240 is a wasteful number, since it uses less digits than its factorization.

1983240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1983240 is about 1408.2755412205. The cubic root of 1983240 is about 125.6391793604.

The spelling of 1983240 in words is "one million, nine hundred eighty-three thousand, two hundred forty".