12944280 has 64 divisors (see below), whose sum is σ = 39074400. Its totient is φ = 3430400.

The previous prime is 12944257. The next prime is 12944291. The reversal of 12944280 is 8244921.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 32080 + ... + 32480.

Almost surely, 2^12944280 is an apocalyptic number.

12944280 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 12944280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19537200).

12944280 is an abundant number, since it is smaller than the sum of its proper divisors (26130120).

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

12944280 is a wasteful number, since it uses less digits than its factorization.

12944280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 12944280 is about 3597.8160041892. The cubic root of 12944280 is about 234.7970482561.

The spelling of 12944280 in words is "twelve million, nine hundred forty-four thousand, two hundred eighty".