12706320 has 80 divisors (see below), whose sum is σ = 42979392. Its totient is φ = 3079680.

The previous prime is 12706313. The next prime is 12706333. The reversal of 12706320 is 2360721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×12706320² = 322901135884800, which contains 22 as substring.

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, 234 + ... + 5046.

Almost surely, 2^12706320 is an apocalyptic number.

12706320 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 12706320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21489696).

12706320 is an abundant number, since it is smaller than the sum of its proper divisors (30273072).

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

12706320 is a wasteful number, since it uses less digits than its factorization.

12706320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840 (or 4834 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 12706320 is about 3564.5925433351. The cubic root of 12706320 is about 233.3493503744.

The spelling of 12706320 in words is "twelve million, seven hundred six thousand, three hundred twenty".