7220530 has 16 divisors (see below), whose sum is σ = 13032000. Its totient is φ = 2880432.

The previous prime is 7220519. The next prime is 7220531. The reversal of 7220530 is 350227.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7220498 and 7220507.

It is not an unprimeable number, because it can be changed into a prime (7220531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4267 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (814500).

Almost surely, 2^7220530 is an apocalyptic number.

7220530 is a deficient number, since it is larger than the sum of its proper divisors (5811470).

7220530 is a wasteful number, since it uses less digits than its factorization.

7220530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 7220530 is about 2687.1043894869. The cubic root of 7220530 is about 193.2812351364.

Adding to 7220530 its reverse (350227), we get a palindrome (7570757).

It can be divided in two parts, 7220 and 530, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 7220530 in words is "seven million, two hundred twenty thousand, five hundred thirty".