7243990656 has 192 divisors, whose sum is σ = 22588087680. Its totient is φ = 2050793472.

The previous prime is 7243990643. The next prime is 7243990679. The reversal of 7243990656 is 6560993427.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 7243990599 and 7243990608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2124505 + ... + 2127911.

It is an arithmetic number, because the mean of its divisors is an integer number (117646290).

Almost surely, 2^7243990656 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 7243990656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11294043840).

7243990656 is an abundant number, since it is smaller than the sum of its proper divisors (15344097024).

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

7243990656 is a wasteful number, since it uses less digits than its factorization.

7243990656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551 (or 3532 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The square root of 7243990656 is about 85111.6364312190. The cubic root of 7243990656 is about 1934.9034269986.

The spelling of 7243990656 in words is "seven billion, two hundred forty-three million, nine hundred ninety thousand, six hundred fifty-six".