7321216 has 32 divisors (see below), whose sum is σ = 16670880. Its totient is φ = 3137280.

The previous prime is 7321207. The next prime is 7321217. The reversal of 7321216 is 6121237.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7321217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3190 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (520965).

Almost surely, 2^7321216 is an apocalyptic number.

It is an amenable number.

7321216 is an abundant number, since it is smaller than the sum of its proper divisors (9349664).

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

7321216 is an equidigital number, since it uses as much as digits as its factorization.

7321216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8192 (or 8180 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 7321216 is about 2705.7745656281. The cubic root of 7321216 is about 194.1754886383.

The spelling of 7321216 in words is "seven million, three hundred twenty-one thousand, two hundred sixteen".