7321080 has 144 divisors (see below), whose sum is σ = 25100280. Its totient is φ = 1707264.

The previous prime is 7321073. The next prime is 7321081. The reversal of 7321080 is 801237.

7321080 = T₁₂₇₁ + T₁₂₇₂ + ... + T₁₂₇₉.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7321081) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 385311 + ... + 385329.

Almost surely, 2^7321080 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 7321080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12550140).

7321080 is an abundant number, since it is smaller than the sum of its proper divisors (17779200).

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

7321080 is a wasteful number, since it uses less digits than its factorization.

7321080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 7321080 is about 2705.7494340755. The cubic root of 7321080 is about 194.1742862866.

The spelling of 7321080 in words is "seven million, three hundred twenty-one thousand, eighty".