7202220 has 96 divisors (see below), whose sum is σ = 22353408. Its totient is φ = 1723392.

The previous prime is 7202219. The next prime is 7202269. The reversal of 7202220 is 222027.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 7202220.

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, 23307 + ... + 23613.

It is an arithmetic number, because the mean of its divisors is an integer number (232848).

Almost surely, 2^7202220 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 7202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11176704).

7202220 is an abundant number, since it is smaller than the sum of its proper divisors (15151188).

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

7202220 is a wasteful number, since it uses less digits than its factorization.

7202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 7202220 is about 2683.6952136932. The cubic root of 7202220 is about 193.1177210524.

Adding to 7202220 its reverse (222027), we get a palindrome (7424247).

The spelling of 7202220 in words is "seven million, two hundred two thousand, two hundred twenty".