722131200 has 540 divisors, whose sum is σ = 3066817600. Its totient is φ = 164229120.

The previous prime is 722131187. The next prime is 722131211. The reversal of 722131200 is 2131227.

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 in 59 ways as a sum of consecutive naturals, for example, 3628701 + ... + 3628899.

Almost surely, 2^722131200 is an apocalyptic number.

722131200 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533408800).

722131200 is an abundant number, since it is smaller than the sum of its proper divisors (2344686400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722131200 is a wasteful number, since it uses less digits than its factorization.

722131200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 722131200 is about 26872.4989533910. The cubic root of 722131200 is about 897.1644087406.

Adding to 722131200 its reverse (2131227), we get a palindrome (724262427).

The spelling of 722131200 in words is "seven hundred twenty-two million, one hundred thirty-one thousand, two hundred".