7291222848 has 336 divisors, whose sum is σ = 25970520576. Its totient is φ = 1904394240.

The previous prime is 7291222843. The next prime is 7291222859. The reversal of 7291222848 is 8482221927.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×7291222848² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7291222843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5922393 + ... + 5923623.

It is an arithmetic number, because the mean of its divisors is an integer number (77293216).

Almost surely, 2^7291222848 is an apocalyptic number.

7291222848 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7291222848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12985260288).

7291222848 is an abundant number, since it is smaller than the sum of its proper divisors (18679297728).

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

7291222848 is a wasteful number, since it uses less digits than its factorization.

7291222848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1369 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 7291222848 is about 85388.6576074364. The cubic root of 7291222848 is about 1939.0996325043.

The spelling of 7291222848 in words is "seven billion, two hundred ninety-one million, two hundred twenty-two thousand, eight hundred forty-eight".