12641280 has 88 divisors (see below), whose sum is σ = 40481472. Its totient is φ = 3366912.

The previous prime is 12641263. The next prime is 12641297. The reversal of 12641280 is 8214621.

It is an interprime number because it is at equal distance from previous prime (12641263) and next prime (12641297).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12641280.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14949 + ... + 15771.

Almost surely, 2^12641280 is an apocalyptic number.

12641280 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 12641280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20240736).

12641280 is an abundant number, since it is smaller than the sum of its proper divisors (27840192).

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

12641280 is an equidigital number, since it uses as much as digits as its factorization.

12641280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12641280 is about 3555.4577764333. The cubic root of 12641280 is about 232.9505196802.

It can be divided in two parts, 12641 and 280, that added together give a palindrome (12921).

The spelling of 12641280 in words is "twelve million, six hundred forty-one thousand, two hundred eighty".