2143980 has 72 divisors (see below), whose sum is σ = 6678672. Its totient is φ = 556416.

The previous prime is 2143969. The next prime is 2143993. The reversal of 2143980 is 893412.

2143980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7602 + ... + 7878.

2^2143980 is an apocalyptic number.

2143980 is a gapful number since it is divisible by the number (20) 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 2143980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3339336).

2143980 is an abundant number, since it is smaller than the sum of its proper divisors (4534692).

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

2143980 is a wasteful number, since it uses less digits than its factorization.

2143980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 330 counting only the distinct ones).

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

The square root of 2143980 is about 1464.2335879224. The cubic root of 2143980 is about 128.9457135922.

The spelling of 2143980 in words is "two million, one hundred forty-three thousand, nine hundred eighty".