1081320 has 32 divisors (see below), whose sum is σ = 3244320. Its totient is φ = 288320.

The previous prime is 1081307. The next prime is 1081331. The reversal of 1081320 is 231801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1081320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4386 + ... + 4625.

It is an arithmetic number, because the mean of its divisors is an integer number (101385).

2^1081320 is an apocalyptic number.

1081320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081320 is an abundant number, since it is smaller than the sum of its proper divisors (2163000).

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

1081320 is a wasteful number, since it uses less digits than its factorization.

1081320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9025 (or 9021 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1081320 is about 1039.8653759021. The cubic root of 1081320 is about 102.6403391948.

The spelling of 1081320 in words is "one million, eighty-one thousand, three hundred twenty".