7021344 has 96 divisors (see below), whose sum is σ = 20623680. Its totient is φ = 2073600.

The previous prime is 7021331. The next prime is 7021361. The reversal of 7021344 is 4431207.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 7021344.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64362 + ... + 64470.

It is an arithmetic number, because the mean of its divisors is an integer number (214830).

Almost surely, 2^7021344 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 7021344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10311840).

7021344 is an abundant number, since it is smaller than the sum of its proper divisors (13602336).

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

7021344 is a wasteful number, since it uses less digits than its factorization.

7021344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 7021344 is about 2649.7818778156. The cubic root of 7021344 is about 191.4873476815.

The spelling of 7021344 in words is "seven million, twenty-one thousand, three hundred forty-four".