1081084320 has 120 divisors (see below), whose sum is σ = 3815372484. Its totient is φ = 288285696.

The previous prime is 1081084313. The next prime is 1081084321. The reversal of 1081084320 is 234801801.

It can be written as a sum of positive squares in 2 ways, for example, as 965220624 + 115863696 = 31068^2 + 10764^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1081084321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28749 + ... + 54668.

Almost surely, 2^1081084320 is an apocalyptic number.

1081084320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081084320 is an abundant number, since it is smaller than the sum of its proper divisors (2734288164).

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

1081084320 is an equidigital number, since it uses as much as digits as its factorization.

1081084320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83444 (or 83427 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1081084320 is about 32879.8467149712. The cubic root of 1081084320 is about 1026.3288163280.

The spelling of 1081084320 in words is "one billion, eighty-one million, eighty-four thousand, three hundred twenty".