1312860 has 24 divisors (see below), whose sum is σ = 3676176. Its totient is φ = 350080.

The previous prime is 1312853. The next prime is 1312867. The reversal of 1312860 is 682131.

It is an interprime number because it is at equal distance from previous prime (1312853) and next prime (1312867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10881 + ... + 11000.

It is an arithmetic number, because the mean of its divisors is an integer number (153174).

2^1312860 is an apocalyptic number.

1312860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312860 is an abundant number, since it is smaller than the sum of its proper divisors (2363316).

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

1312860 is a wasteful number, since it uses less digits than its factorization.

1312860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21893 (or 21891 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1312860 is about 1145.8010298477. The cubic root of 1312860 is about 109.4979879116.

Adding to 1312860 its reverse (682131), we get a palindrome (1994991).

The spelling of 1312860 in words is "one million, three hundred twelve thousand, eight hundred sixty".