7220502 has 48 divisors (see below), whose sum is σ = 16511040. Its totient is φ = 2364552.

The previous prime is 7220497. The next prime is 7220519. The reversal of 7220502 is 2050227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40249 + ... + 40427.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^7220502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7220502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8255520).

7220502 is an abundant number, since it is smaller than the sum of its proper divisors (9290538).

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

7220502 is a wasteful number, since it uses less digits than its factorization.

7220502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 7220502 is about 2687.0991794126. The cubic root of 7220502 is about 193.2809852988.

Adding to 7220502 its reverse (2050227), we get a palindrome (9270729).

The spelling of 7220502 in words is "seven million, two hundred twenty thousand, five hundred two".