7222000 has 80 divisors (see below), whose sum is σ = 18338112. Its totient is φ = 2745600.

The previous prime is 7221983. The next prime is 7222001. The reversal of 7222000 is 2227.

It is a tau number, because it is divible by the number of its divisors (80).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45922 + ... + 46078.

Almost surely, 2^7222000 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 7222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9169056).

7222000 is an abundant number, since it is smaller than the sum of its proper divisors (11116112).

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

7222000 is a wasteful number, since it uses less digits than its factorization.

7222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 7222000 is about 2687.3779042033. The cubic root of 7222000 is about 193.2943507081.

Adding to 7222000 its reverse (2227), we get a palindrome (7224227).

The spelling of 7222000 in words is "seven million, two hundred twenty-two thousand".