1291360 has 48 divisors (see below), whose sum is σ = 3489696. Its totient is φ = 442368.

The previous prime is 1291357. The next prime is 1291369. The reversal of 1291360 is 631921.

It is a super-2 number, since 2×1291360² = 3335221299200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 1696.

It is an arithmetic number, because the mean of its divisors is an integer number (72702).

2^1291360 is an apocalyptic number.

1291360 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 1291360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744848).

1291360 is an abundant number, since it is smaller than the sum of its proper divisors (2198336).

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

1291360 is a wasteful number, since it uses less digits than its factorization.

1291360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1291360 is about 1136.3802180608. The cubic root of 1291360 is about 108.8969651714.

The spelling of 1291360 in words is "one million, two hundred ninety-one thousand, three hundred sixty".