7220875136 has 64 divisors (see below), whose sum is σ = 14880053760. Its totient is φ = 3486758400.

The previous prime is 7220875117. The next prime is 7220875141. The reversal of 7220875136 is 6315780227.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 7220875093 and 7220875102.

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 7 ways as a sum of consecutive naturals, for example, 2264135 + ... + 2267321.

It is an arithmetic number, because the mean of its divisors is an integer number (232500840).

Almost surely, 2^7220875136 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 7220875136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7440026880).

7220875136 is an abundant number, since it is smaller than the sum of its proper divisors (7659178624).

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

7220875136 is a wasteful number, since it uses less digits than its factorization.

7220875136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803 (or 3791 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 7220875136 is about 84975.7326299691. The cubic root of 7220875136 is about 1932.8431465413.

The spelling of 7220875136 in words is "seven billion, two hundred twenty million, eight hundred seventy-five thousand, one hundred thirty-six".