12280080 has 80 divisors (see below), whose sum is σ = 40086720. Its totient is φ = 3101184.

The previous prime is 12280067. The next prime is 12280087. The reversal of 12280080 is 8008221.

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

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3214 + ... + 5906.

It is an arithmetic number, because the mean of its divisors is an integer number (501084).

Almost surely, 2^12280080 is an apocalyptic number.

12280080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12280080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20043360).

12280080 is an abundant number, since it is smaller than the sum of its proper divisors (27806640).

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

12280080 is a wasteful number, since it uses less digits than its factorization.

12280080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 12280080 is about 3504.2945081714. The cubic root of 12280080 is about 230.7103432650.

The spelling of 12280080 in words is "twelve million, two hundred eighty thousand, eighty".