12801172 has 12 divisors (see below), whose sum is σ = 22487220. Its totient is φ = 6376256.

The previous prime is 12801167. The next prime is 12801199. The reversal of 12801172 is 27110821.

It can be written as a sum of positive squares in 2 ways, for example, as 7584516 + 5216656 = 2754^2 + 2284^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4873 + ... + 7024.

It is an arithmetic number, because the mean of its divisors is an integer number (1873935).

Almost surely, 2^12801172 is an apocalyptic number.

It is an amenable number.

12801172 is a deficient number, since it is larger than the sum of its proper divisors (9686048).

12801172 is a wasteful number, since it uses less digits than its factorization.

12801172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12170 (or 12168 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12801172 is about 3577.8725522299. The cubic root of 12801172 is about 233.9285583158.

Adding to 12801172 its reverse (27110821), we get a palindrome (39911993).

The spelling of 12801172 in words is "twelve million, eight hundred one thousand, one hundred seventy-two".