7162220 has 48 divisors (see below), whose sum is σ = 16393440. Its totient is φ = 2628288.

The previous prime is 7162171. The next prime is 7162229. The reversal of 7162220 is 222617.

7162220 = 116² + 117² + ... + 284².

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 7162192 and 7162201.

It is not an unprimeable number, because it can be changed into a prime (7162229) 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, 43859 + ... + 44021.

It is an arithmetic number, because the mean of its divisors is an integer number (341530).

Almost surely, 2^7162220 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 7162220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8196720).

7162220 is an abundant number, since it is smaller than the sum of its proper divisors (9231220).

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

7162220 is a wasteful number, since it uses less digits than its factorization.

7162220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 7162220 is about 2676.2324263785. The cubic root of 7162220 is about 192.7595419661.

Adding to 7162220 its reverse (222617), we get a palindrome (7384837).

The spelling of 7162220 in words is "seven million, one hundred sixty-two thousand, two hundred twenty".