4021284 has 12 divisors (see below), whose sum is σ = 9383024. Its totient is φ = 1340424.

The previous prime is 4021261. The next prime is 4021301. The reversal of 4021284 is 4821204.

4021284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 4021284.

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 3 ways as a sum of consecutive naturals, for example, 167542 + ... + 167565.

Almost surely, 2^4021284 is an apocalyptic number.

It is an amenable number.

4021284 is an abundant number, since it is smaller than the sum of its proper divisors (5361740).

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

4021284 is a wasteful number, since it uses less digits than its factorization.

4021284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335114 (or 335112 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 4021284 is about 2005.3139405091. The cubic root of 4021284 is about 159.0211593216.

Adding to 4021284 its reverse (4821204), we get a palindrome (8842488).

The spelling of 4021284 in words is "four million, twenty-one thousand, two hundred eighty-four".