7320256920 has 576 divisors, whose sum is σ = 27388108800. Its totient is φ = 1690191360.

The previous prime is 7320256903. The next prime is 7320256927. The reversal of 7320256920 is 296520237.

7320256920 is a `hidden beast` number, since 73 + 2 + 0 + 2 + 569 + 20 = 666.

It is a super-2 number, since 2×7320256920² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7320256927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 92661441 + ... + 92661519.

It is an arithmetic number, because the mean of its divisors is an integer number (47548800).

Almost surely, 2^7320256920 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 7320256920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13694054400).

7320256920 is an abundant number, since it is smaller than the sum of its proper divisors (20067851880).

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

7320256920 is a wasteful number, since it uses less digits than its factorization.

7320256920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 7320256920 is about 85558.4999868511. The cubic root of 7320256920 is about 1941.6700926544.

The spelling of 7320256920 in words is "seven billion, three hundred twenty million, two hundred fifty-six thousand, nine hundred twenty".