722335240 has 128 divisors (see below), whose sum is σ = 1867173120. Its totient is φ = 248934400.

The previous prime is 722335231. The next prime is 722335249. The reversal of 722335240 is 42533227.

It is an interprime number because it is at equal distance from previous prime (722335231) and next prime (722335249).

It is a junction number, because it is equal to n+sod(n) for n = 722335199 and 722335208.

It is not an unprimeable number, because it can be changed into a prime (722335249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1386180 + ... + 1386700.

It is an arithmetic number, because the mean of its divisors is an integer number (14587290).

Almost surely, 2^722335240 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 722335240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933586560).

722335240 is an abundant number, since it is smaller than the sum of its proper divisors (1144837880).

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

722335240 is a wasteful number, since it uses less digits than its factorization.

722335240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 722335240 is about 26876.2951315839. The cubic root of 722335240 is about 897.2488994756.

Adding to 722335240 its reverse (42533227), we get a palindrome (764868467).

The spelling of 722335240 in words is "seven hundred twenty-two million, three hundred thirty-five thousand, two hundred forty".