12707928 has 56 divisors (see below), whose sum is σ = 35741100. Its totient is φ = 4234032.

The previous prime is 12707927. The next prime is 12707953. The reversal of 12707928 is 82970721.

It is a super-2 number, since 2×12707928² = 322982868106368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12707892 and 12707901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12707927) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 4743 + ... + 6921.

Almost surely, 2^12707928 is an apocalyptic number.

12707928 is a gapful number since it is divisible by the number (18) 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 12707928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17870550).

12707928 is an abundant number, since it is smaller than the sum of its proper divisors (23033172).

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

12707928 is an equidigital number, since it uses as much as digits as its factorization.

12707928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 12707928 is about 3564.8180879254. The cubic root of 12707928 is about 233.3591935057.

The spelling of 12707928 in words is "twelve million, seven hundred seven thousand, nine hundred twenty-eight".