1316980 has 48 divisors (see below), whose sum is σ = 3306240. Its totient is φ = 430848.

The previous prime is 1316971. The next prime is 1316983. The reversal of 1316980 is 896131.

1316980 = 125² + 126² + ... + 180².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3016 + ... + 3424.

It is an arithmetic number, because the mean of its divisors is an integer number (68880).

2^1316980 is an apocalyptic number.

1316980 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 1316980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653120).

1316980 is an abundant number, since it is smaller than the sum of its proper divisors (1989260).

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

1316980 is a wasteful number, since it uses less digits than its factorization.

1316980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1316980 is about 1147.5974904120. The cubic root of 1316980 is about 109.6124100179.

The spelling of 1316980 in words is "one million, three hundred sixteen thousand, nine hundred eighty".