7220372 has 6 divisors (see below), whose sum is σ = 12635658. Its totient is φ = 3610184.

The previous prime is 7220371. The next prime is 7220377. The reversal of 7220372 is 2730227.

It can be written as a sum of positive squares in only one way, i.e., 7214596 + 5776 = 2686^2 + 76^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902543 + ... + 902550.

It is an arithmetic number, because the mean of its divisors is an integer number (2105943).

Almost surely, 2^7220372 is an apocalyptic number.

It is an amenable number.

7220372 is a deficient number, since it is larger than the sum of its proper divisors (5415286).

7220372 is a wasteful number, since it uses less digits than its factorization.

7220372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805097 (or 1805095 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 7220372 is about 2687.0749896495. The cubic root of 7220372 is about 193.2798253296.

Adding to 7220372 its reverse (2730227), we get a palindrome (9950599).

The spelling of 7220372 in words is "seven million, two hundred twenty thousand, three hundred seventy-two".