12208280 has 64 divisors (see below), whose sum is σ = 31968000. Its totient is φ = 4109184.

The previous prime is 12208277. The next prime is 12208291. The reversal of 12208280 is 8280221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16151 + ... + 16889.

It is an arithmetic number, because the mean of its divisors is an integer number (499500).

Almost surely, 2^12208280 is an apocalyptic number.

12208280 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 12208280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15984000).

12208280 is an abundant number, since it is smaller than the sum of its proper divisors (19759720).

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

12208280 is a wasteful number, since it uses less digits than its factorization.

12208280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 12208280 is about 3494.0349168261. The cubic root of 12208280 is about 230.2598198052.

The spelling of 12208280 in words is "twelve million, two hundred eight thousand, two hundred eighty".