1291160 has 48 divisors (see below), whose sum is σ = 3162240. Its totient is φ = 474240.

The previous prime is 1291159. The next prime is 1291163. The reversal of 1291160 is 611921.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291163) 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 11 ways as a sum of consecutive naturals, for example, 6665 + ... + 6855.

It is an arithmetic number, because the mean of its divisors is an integer number (65880).

2^1291160 is an apocalyptic number.

1291160 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 1291160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581120).

1291160 is an abundant number, since it is smaller than the sum of its proper divisors (1871080).

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

1291160 is a wasteful number, since it uses less digits than its factorization.

1291160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1291160 is about 1136.2922159374. The cubic root of 1291160 is about 108.8913430579.

The spelling of 1291160 in words is "one million, two hundred ninety-one thousand, one hundred sixty".