722235740 has 24 divisors (see below), whose sum is σ = 1551968880. Its totient is φ = 282175488.

The previous prime is 722235727. The next prime is 722235763. The reversal of 722235740 is 47532227.

It is a junction number, because it is equal to n+sod(n) for n = 722235697 and 722235706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419045 + ... + 420764.

It is an arithmetic number, because the mean of its divisors is an integer number (64665370).

Almost surely, 2^722235740 is an apocalyptic number.

It is an amenable number.

722235740 is an abundant number, since it is smaller than the sum of its proper divisors (829733140).

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

722235740 is a wasteful number, since it uses less digits than its factorization.

722235740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839861 (or 839859 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 722235740 is about 26874.4439942485. The cubic root of 722235740 is about 897.2076996005.

Adding to 722235740 its reverse (47532227), we get a palindrome (769767967).

The spelling of 722235740 in words is "seven hundred twenty-two million, two hundred thirty-five thousand, seven hundred forty".