722541520 has 40 divisors (see below), whose sum is σ = 1681392384. Its totient is φ = 288761472.

The previous prime is 722541499. The next prime is 722541529. The reversal of 722541520 is 25145227.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722541529) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 106057 + ... + 112663.

Almost surely, 2^722541520 is an apocalyptic number.

It is an amenable number.

722541520 is an abundant number, since it is smaller than the sum of its proper divisors (958850864).

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

722541520 is a wasteful number, since it uses less digits than its factorization.

722541520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7987 (or 7981 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 722541520 is about 26880.1324401499. The cubic root of 722541520 is about 897.3343015979.

Adding to 722541520 its reverse (25145227), we get a palindrome (747686747).

The spelling of 722541520 in words is "seven hundred twenty-two million, five hundred forty-one thousand, five hundred twenty".