7224927840 has 960 divisors, whose sum is σ = 30172443840. Its totient is φ = 1612431360.

The previous prime is 7224927799. The next prime is 7224927883. The reversal of 7224927840 is 487294227.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 118441410 + ... + 118441470.

It is an arithmetic number, because the mean of its divisors is an integer number (31429629).

Almost surely, 2^7224927840 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 7224927840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15086221920).

7224927840 is an abundant number, since it is smaller than the sum of its proper divisors (22947516000).

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

7224927840 is a wasteful number, since it uses less digits than its factorization.

7224927840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 7224927840 is about 84999.5755283519. The cubic root of 7224927840 is about 1933.2046805658.

The spelling of 7224927840 in words is "seven billion, two hundred twenty-four million, nine hundred twenty-seven thousand, eight hundred forty".