7290722868 has 288 divisors, whose sum is σ = 21094319232. Its totient is φ = 1957063680.

The previous prime is 7290722839. The next prime is 7290722893. The reversal of 7290722868 is 8682270927.

It is a self number, because there is not a number n which added to its sum of digits gives 7290722868.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 99872880 + ... + 99872952.

It is an arithmetic number, because the mean of its divisors is an integer number (73244164).

Almost surely, 2^7290722868 is an apocalyptic number.

7290722868 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 7290722868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10547159616).

7290722868 is an abundant number, since it is smaller than the sum of its proper divisors (13803596364).

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

7290722868 is a wasteful number, since it uses less digits than its factorization.

7290722868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 7290722868 is about 85385.7298850341. The cubic root of 7290722868 is about 1939.0553082889.

The spelling of 7290722868 in words is "seven billion, two hundred ninety million, seven hundred twenty-two thousand, eight hundred sixty-eight".