7216880 has 80 divisors (see below), whose sum is σ = 18748800. Its totient is φ = 2561280.

The previous prime is 7216879. The next prime is 7216889. The reversal of 7216880 is 886127.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216889) 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 15 ways as a sum of consecutive naturals, for example, 51851 + ... + 51989.

It is an arithmetic number, because the mean of its divisors is an integer number (234360).

Almost surely, 2^7216880 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 7216880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9374400).

7216880 is an abundant number, since it is smaller than the sum of its proper divisors (11531920).

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

7216880 is a wasteful number, since it uses less digits than its factorization.

7216880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 7216880 is about 2686.4251338908. The cubic root of 7216880 is about 193.2486615620.

The spelling of 7216880 in words is "seven million, two hundred sixteen thousand, eight hundred eighty".