722022312 has 96 divisors (see below), whose sum is σ = 1998182880. Its totient is φ = 215614080.

The previous prime is 722022311. The next prime is 722022337. The reversal of 722022312 is 213220227.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (722022311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1818498 + ... + 1818894.

It is an arithmetic number, because the mean of its divisors is an integer number (20814405).

Almost surely, 2^722022312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722022312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (999091440).

722022312 is an abundant number, since it is smaller than the sum of its proper divisors (1276160568).

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

722022312 is a wasteful number, since it uses less digits than its factorization.

722022312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 722022312 is about 26870.4728652102. The cubic root of 722022312 is about 897.1193128962.

Adding to 722022312 its reverse (213220227), we get a palindrome (935242539).

The spelling of 722022312 in words is "seven hundred twenty-two million, twenty-two thousand, three hundred twelve".