12329280 has 112 divisors (see below), whose sum is σ = 43525440. Its totient is φ = 3285504.

The previous prime is 12329279. The next prime is 12329297. The reversal of 12329280 is 8292321.

It is a happy number.

It is a super-2 number, since 2×12329280² = 304022290636800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 7927 + ... + 9353.

It is an arithmetic number, because the mean of its divisors is an integer number (388620).

Almost surely, 2^12329280 is an apocalyptic number.

12329280 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 12329280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21762720).

12329280 is an abundant number, since it is smaller than the sum of its proper divisors (31196160).

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

12329280 is a wasteful number, since it uses less digits than its factorization.

12329280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12329280 is about 3511.3074488002. The cubic root of 12329280 is about 231.0180454784.

It can be divided in two parts, 123 and 29280, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 12329280 in words is "twelve million, three hundred twenty-nine thousand, two hundred eighty".