7130220 has 48 divisors (see below), whose sum is σ = 20122368. Its totient is φ = 1886400.

The previous prime is 7130213. The next prime is 7130231. The reversal of 7130220 is 220317.

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 7130220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8667 + ... + 9453.

It is an arithmetic number, because the mean of its divisors is an integer number (419216).

Almost surely, 2^7130220 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 7130220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10061184).

7130220 is an abundant number, since it is smaller than the sum of its proper divisors (12992148).

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

7130220 is a wasteful number, since it uses less digits than its factorization.

7130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 7130220 is about 2670.2471795697. The cubic root of 7130220 is about 192.4720373169.

Adding to 7130220 its reverse (220317), we get a palindrome (7350537).

Subtracting from 7130220 its reverse (220317), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 7130220 in words is "seven million, one hundred thirty thousand, two hundred twenty".