7219944 has 48 divisors (see below), whose sum is σ = 19714500. Its totient is φ = 2386944.

The previous prime is 7219939. The next prime is 7219963. The reversal of 7219944 is 4499127.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 656100 = 2562^2 + 810^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7219899 and 7219908.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10392 + ... + 11064.

Almost surely, 2^7219944 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 7219944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9857250).

7219944 is an abundant number, since it is smaller than the sum of its proper divisors (12494556).

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

7219944 is a wasteful number, since it uses less digits than its factorization.

7219944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 827 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 7219944 is about 2686.9953479677. The cubic root of 7219944 is about 193.2760062558.

The spelling of 7219944 in words is "seven million, two hundred nineteen thousand, nine hundred forty-four".