3882021 has 16 divisors (see below), whose sum is σ = 6081600. Its totient is φ = 2171520.

The previous prime is 3882019. The next prime is 3882029. The reversal of 3882021 is 1202883.

It is not a de Polignac number, because 3882021 - 2¹ = 3882019 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3881982 and 3882000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3882029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4096 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (380100).

Almost surely, 2^3882021 is an apocalyptic number.

It is an amenable number.

3882021 is a deficient number, since it is larger than the sum of its proper divisors (2199579).

3882021 is a wasteful number, since it uses less digits than its factorization.

3882021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9076.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 3882021 is about 1970.2844972237. The cubic root of 3882021 is about 157.1638383241.

The spelling of 3882021 in words is "three million, eight hundred eighty-two thousand, twenty-one".