12071280 has 160 divisors (see below), whose sum is σ = 41622336. Its totient is φ = 2875392.

The previous prime is 12071273. The next prime is 12071281. The reversal of 12071280 is 8217021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12071281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165324 + ... + 165396.

Almost surely, 2^12071280 is an apocalyptic number.

12071280 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 12071280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20811168).

12071280 is an abundant number, since it is smaller than the sum of its proper divisors (29551056).

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

12071280 is a wasteful number, since it uses less digits than its factorization.

12071280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12071280 is about 3474.3747638964. The cubic root of 12071280 is about 229.3952607534.

The spelling of 12071280 in words is "twelve million, seventy-one thousand, two hundred eighty".