7224726528 has 352 divisors, whose sum is σ = 22480972800. Its totient is φ = 2289917952.

The previous prime is 7224726511. The next prime is 7224726533. The reversal of 7224726528 is 8256274227.

Its product of digits (752640) is a multiple of the sum of its prime divisors (210).

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 31 ways as a sum of consecutive naturals, for example, 70142925 + ... + 70143027.

It is an arithmetic number, because the mean of its divisors is an integer number (63866400).

Almost surely, 2^7224726528 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 7224726528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11240486400).

7224726528 is an abundant number, since it is smaller than the sum of its proper divisors (15256246272).

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

7224726528 is a wasteful number, since it uses less digits than its factorization.

7224726528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 210 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 7224726528 is about 84998.3913259539. The cubic root of 7224726528 is about 1933.1867250962.

It can be divided in two parts, 722472 and 6528, that added together give a cube (729000 = 90³).

The spelling of 7224726528 in words is "seven billion, two hundred twenty-four million, seven hundred twenty-six thousand, five hundred twenty-eight".