7200722 has 4 divisors (see below), whose sum is σ = 10801086. Its totient is φ = 3600360.

The previous prime is 7200719. The next prime is 7200733. The reversal of 7200722 is 2270027.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5564881 + 1635841 = 2359^2 + 1279^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7200694 and 7200703.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800179 + ... + 1800182.

Almost surely, 2^7200722 is an apocalyptic number.

7200722 is a deficient number, since it is larger than the sum of its proper divisors (3600364).

7200722 is a wasteful number, since it uses less digits than its factorization.

7200722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600363.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 7200722 is about 2683.4161063838. The cubic root of 7200722 is about 193.1043311807.

Adding to 7200722 its reverse (2270027), we get a palindrome (9470749).

It can be divided in two parts, 7200 and 722, that multiplied together give a square (5198400 = 2280²).

The spelling of 7200722 in words is "seven million, two hundred thousand, seven hundred twenty-two".