1980944 has 40 divisors (see below), whose sum is σ = 4583040. Its totient is φ = 811008.

The previous prime is 1980941. The next prime is 1980947. The reversal of 1980944 is 4490891.

1980944 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1980941) and next prime (1980947).

It is a super-2 number, since 2×1980944² = 7848278262272, which contains 22 as substring.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1980941) 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, 2192 + ... + 2960.

It is an arithmetic number, because the mean of its divisors is an integer number (114576).

2^1980944 is an apocalyptic number.

1980944 is a gapful number since it is divisible by the number (14) 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 1980944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2291520).

1980944 is an abundant number, since it is smaller than the sum of its proper divisors (2602096).

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

1980944 is a wasteful number, since it uses less digits than its factorization.

1980944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1980944 is about 1407.4601237691. The cubic root of 1980944 is about 125.5906764145.

The spelling of 1980944 in words is "one million, nine hundred eighty thousand, nine hundred forty-four".