7215480776 has 64 divisors (see below), whose sum is σ = 15857614080. Its totient is φ = 3013355520.

The previous prime is 7215480659. The next prime is 7215480851. The reversal of 7215480776 is 6770845127.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7215480776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2976701 + ... + 2979123.

It is an arithmetic number, because the mean of its divisors is an integer number (247775220).

Almost surely, 2^7215480776 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 7215480776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7928807040).

7215480776 is an abundant number, since it is smaller than the sum of its proper divisors (8642133304).

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

7215480776 is a wasteful number, since it uses less digits than its factorization.

7215480776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774 (or 3770 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 47.

The square root of 7215480776 is about 84943.9861084939. The cubic root of 7215480776 is about 1932.3617160129.

The spelling of 7215480776 in words is "seven billion, two hundred fifteen million, four hundred eighty thousand, seven hundred seventy-six".