12820174 has 16 divisors (see below), whose sum is σ = 20897280. Its totient is φ = 5876280.

The previous prime is 12820151. The next prime is 12820201. The reversal of 12820174 is 47102821.

It is a happy number.

It is a super-2 number, since 2×12820174² = 328713722780552, 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 7 ways as a sum of consecutive naturals, for example, 4264 + ... + 6619.

It is an arithmetic number, because the mean of its divisors is an integer number (1306080).

Almost surely, 2^12820174 is an apocalyptic number.

12820174 is a deficient number, since it is larger than the sum of its proper divisors (8077106).

12820174 is a wasteful number, since it uses less digits than its factorization.

12820174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10935.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12820174 is about 3580.5270561748. The cubic root of 12820174 is about 234.0442485782.

Adding to 12820174 its reverse (47102821), we get a palindrome (59922995).

It can be divided in two parts, 128 and 20174, that added together give a palindrome (20302).

The spelling of 12820174 in words is "twelve million, eight hundred twenty thousand, one hundred seventy-four".