4081284 has 36 divisors (see below), whose sum is σ = 10464636. Its totient is φ = 1340928.

The previous prime is 4081283. The next prime is 4081303. The reversal of 4081284 is 4821804.

It can be written as a sum of positive squares in 2 ways, for example, as 1258884 + 2822400 = 1122^2 + 1680^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (4081283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1852 + ... + 3404.

Almost surely, 2^4081284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4081284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5232318).

4081284 is an abundant number, since it is smaller than the sum of its proper divisors (6383352).

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

4081284 is a wasteful number, since it uses less digits than its factorization.

4081284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 4081284 is about 2020.2188000313. The cubic root of 4081284 is about 159.8081554816.

The spelling of 4081284 in words is "four million, eighty-one thousand, two hundred eighty-four".