7221576 has 48 divisors (see below), whose sum is σ = 18608400. Its totient is φ = 2335360.

The previous prime is 7221569. The next prime is 7221587. The reversal of 7221576 is 6751227.

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, 40255 + ... + 40433.

It is an arithmetic number, because the mean of its divisors is an integer number (387675).

Almost surely, 2^7221576 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 7221576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9304200).

7221576 is an abundant number, since it is smaller than the sum of its proper divisors (11386824).

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

7221576 is a wasteful number, since it uses less digits than its factorization.

7221576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 225 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 7221576 is about 2687.2990157405. The cubic root of 7221576 is about 193.2905678960.

The spelling of 7221576 in words is "seven million, two hundred twenty-one thousand, five hundred seventy-six".