12927940 has 12 divisors (see below), whose sum is σ = 27148716. Its totient is φ = 5171168.

The previous prime is 12927931. The next prime is 12927947. The reversal of 12927940 is 4972921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1327104 + 11600836 = 1152^2 + 3406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12927896 and 12927905.

It is not an unprimeable number, because it can be changed into a prime (12927947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323179 + ... + 323218.

It is an arithmetic number, because the mean of its divisors is an integer number (2262393).

Almost surely, 2^12927940 is an apocalyptic number.

12927940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12927940 is an abundant number, since it is smaller than the sum of its proper divisors (14220776).

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

12927940 is a wasteful number, since it uses less digits than its factorization.

12927940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646406 (or 646404 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12927940 is about 3595.5444650289. The cubic root of 12927940 is about 234.6982092515.

The spelling of 12927940 in words is "twelve million, nine hundred twenty-seven thousand, nine hundred forty".