722221450 has 12 divisors (see below), whose sum is σ = 1343331990. Its totient is φ = 288888560.

The previous prime is 722221447. The next prime is 722221469. The reversal of 722221450 is 54122227.

It can be written as a sum of positive squares in 3 ways, for example, as 635191209 + 87030241 = 25203^2 + 9329^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7222165 + ... + 7222264.

Almost surely, 2^722221450 is an apocalyptic number.

722221450 is a deficient number, since it is larger than the sum of its proper divisors (621110540).

722221450 is a wasteful number, since it uses less digits than its factorization.

722221450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14444441 (or 14444436 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 722221450 is about 26874.1781269679. The cubic root of 722221450 is about 897.2017822424.

Adding to 722221450 its reverse (54122227), we get a palindrome (776343677).

The spelling of 722221450 in words is "seven hundred twenty-two million, two hundred twenty-one thousand, four hundred fifty".