1091360 has 48 divisors (see below), whose sum is σ = 2721600. Its totient is φ = 412416.

The previous prime is 1091359. The next prime is 1091369. The reversal of 1091360 is 631901.

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

It is not an unprimeable number, because it can be changed into a prime (1091369) 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 7 ways as a sum of consecutive naturals, for example, 2861 + ... + 3219.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2^1091360 is an apocalyptic number.

1091360 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 1091360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360800).

1091360 is an abundant number, since it is smaller than the sum of its proper divisors (1630240).

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

1091360 is a wasteful number, since it uses less digits than its factorization.

1091360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1091360 is about 1044.6817697270. The cubic root of 1091360 is about 102.9570311234.

It can be divided in two parts, 109 and 1360, that multiplied together give a triangular number (148240 = T₅₄₄).

The spelling of 1091360 in words is "one million, ninety-one thousand, three hundred sixty".