7021944 has 128 divisors (see below), whose sum is σ = 21600000. Its totient is φ = 2104704.

The previous prime is 7021939. The next prime is 7021951. The reversal of 7021944 is 4491207.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118987 + ... + 119045.

It is an arithmetic number, because the mean of its divisors is an integer number (168750).

Almost surely, 2^7021944 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 7021944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10800000).

7021944 is an abundant number, since it is smaller than the sum of its proper divisors (14578056).

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

7021944 is a wasteful number, since it uses less digits than its factorization.

7021944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 7021944 is about 2649.8950922631. The cubic root of 7021944 is about 191.4928019618.

The spelling of 7021944 in words is "seven million, twenty-one thousand, nine hundred forty-four".