7224487144 has 64 divisors (see below), whose sum is σ = 16407135360. Its totient is φ = 2911334400.

The previous prime is 7224487139. The next prime is 7224487169. The reversal of 7224487144 is 4417844227.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 7224487144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231819 + ... + 1237669.

It is an arithmetic number, because the mean of its divisors is an integer number (256361490).

Almost surely, 2^7224487144 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 7224487144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8203567680).

7224487144 is an abundant number, since it is smaller than the sum of its proper divisors (9182648216).

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

7224487144 is a wasteful number, since it uses less digits than its factorization.

7224487144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7178 (or 7174 counting only the distinct ones).

The product of its digits is 401408, while the sum is 43.

The square root of 7224487144 is about 84996.9831464623. The cubic root of 7224487144 is about 1933.1653734653.

The spelling of 7224487144 in words is "seven billion, two hundred twenty-four million, four hundred eighty-seven thousand, one hundred forty-four".