722450 has 12 divisors (see below), whose sum is σ = 1343850. Its totient is φ = 288960.

The previous prime is 722431. The next prime is 722459. The reversal of 722450 is 54227.

It can be written as a sum of positive squares in 3 ways, for example, as 693889 + 28561 = 833^2 + 169^2 .

It is a d-powerful number, because it can be written as 7² + 2¹⁶ + 4⁶ + 2¹⁸ + 5⁸ + 0 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (722459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7175 + ... + 7274.

2⁷²²⁴⁵⁰ is an apocalyptic number.

722450 is a deficient number, since it is larger than the sum of its proper divisors (621400).

722450 is a wasteful number, since it uses less digits than its factorization.

722450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14461 (or 14456 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 722450 is about 849.9705877264. The cubic root of 722450 is about 89.7296413347.

Adding to 722450 its reverse (54227), we get a palindrome (776677).

It can be divided in two parts, 722 and 450, that multiplied together give a square (324900 = 570²).

The spelling of 722450 in words is "seven hundred twenty-two thousand, four hundred fifty".