1317880 has 32 divisors (see below), whose sum is σ = 3032640. Its totient is φ = 515200.

The previous prime is 1317853. The next prime is 1317881. The reversal of 1317880 is 887131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1530 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (94770).

2^1317880 is an apocalyptic number.

1317880 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 1317880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516320).

1317880 is an abundant number, since it is smaller than the sum of its proper divisors (1714760).

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

1317880 is a wasteful number, since it uses less digits than its factorization.

1317880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1317880 is about 1147.9895469907. The cubic root of 1317880 is about 109.6373733697.

It can be divided in two parts, 1317 and 880, that added together give a cube (2197 = 13³).

The spelling of 1317880 in words is "one million, three hundred seventeen thousand, eight hundred eighty".