4021344 has 36 divisors (see below), whose sum is σ = 11436516. Its totient is φ = 1340352.

The previous prime is 4021309. The next prime is 4021349. The reversal of 4021344 is 4431204.

4021344 is digitally balanced in base 2 and base 5, because in such bases 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 (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021349) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6694 + ... + 7269.

It is an arithmetic number, because the mean of its divisors is an integer number (317681).

Almost surely, 2^4021344 is an apocalyptic number.

It is an amenable number.

4021344 is an abundant number, since it is smaller than the sum of its proper divisors (7415172).

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

4021344 is a wasteful number, since it uses less digits than its factorization.

4021344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13979 (or 13968 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4021344 is about 2005.3289007043. The cubic root of 4021344 is about 159.0219502151.

Adding to 4021344 its reverse (4431204), we get a palindrome (8452548).

The spelling of 4021344 in words is "four million, twenty-one thousand, three hundred forty-four".