2021982 has 8 divisors (see below), whose sum is σ = 4043976. Its totient is φ = 673992.

The previous prime is 2021959. The next prime is 2022011. The reversal of 2021982 is 2891202.

It is a sphenic number, since it is the product of 3 distinct primes.

2021982 is an admirable number.

It is a super-2 number, since 2×2021982² = 8176822416648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168493 + ... + 168504.

It is an arithmetic number, because the mean of its divisors is an integer number (505497).

2^2021982 is an apocalyptic number.

2021982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2021982 is a wasteful number, since it uses less digits than its factorization.

2021982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337002.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2021982 is about 1421.9641345688. The cubic root of 2021982 is about 126.4520171928.

It can be divided in two parts, 20219 and 82, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 2021982 in words is "two million, twenty-one thousand, nine hundred eighty-two".