7224547720 has 64 divisors (see below), whose sum is σ = 17675723520. Its totient is φ = 2641607424.

The previous prime is 7224547697. The next prime is 7224547723. The reversal of 7224547720 is 277454227.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (7224547723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13884 + ... + 121003.

It is an arithmetic number, because the mean of its divisors is an integer number (276183180).

Almost surely, 2^7224547720 is an apocalyptic number.

It is an amenable number.

7224547720 is an abundant number, since it is smaller than the sum of its proper divisors (10451175800).

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

7224547720 is a wasteful number, since it uses less digits than its factorization.

7224547720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135014 (or 135010 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 40.

The square root of 7224547720 is about 84997.3394877746. The cubic root of 7224547720 is about 1933.1707765293.

The spelling of 7224547720 in words is "seven billion, two hundred twenty-four million, five hundred forty-seven thousand, seven hundred twenty".