1312560 has 60 divisors (see below), whose sum is σ = 4410432. Its totient is φ = 349824.

The previous prime is 1312559. The next prime is 1312561. The reversal of 1312560 is 652131.

It is an interprime number because it is at equal distance from previous prime (1312559) and next prime (1312561).

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1312561) 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 11 ways as a sum of consecutive naturals, for example, 192 + ... + 1631.

2^1312560 is an apocalyptic number.

1312560 is a gapful number since it is divisible by the number (10) 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 1312560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2205216).

1312560 is an abundant number, since it is smaller than the sum of its proper divisors (3097872).

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

1312560 is a wasteful number, since it uses less digits than its factorization.

1312560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 1833 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1312560 is about 1145.6701095865. The cubic root of 1312560 is about 109.4896468600.

Adding to 1312560 its reverse (652131), we get a palindrome (1964691).

The spelling of 1312560 in words is "one million, three hundred twelve thousand, five hundred sixty".