1080779800 has 48 divisors (see below), whose sum is σ = 2520887760. Its totient is φ = 430922880.

The previous prime is 1080779771. The next prime is 1080779857. The reversal of 1080779800 is 89770801.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

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, 54877 + ... + 71923.

It is an arithmetic number, because the mean of its divisors is an integer number (52518495).

Almost surely, 2^1080779800 is an apocalyptic number.

1080779800 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 1080779800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260443880).

1080779800 is an abundant number, since it is smaller than the sum of its proper divisors (1440107960).

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

1080779800 is a wasteful number, since it uses less digits than its factorization.

1080779800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17380 (or 17371 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1080779800 is about 32875.2155886467. The cubic root of 1080779800 is about 1026.2324417914.

The spelling of 1080779800 in words is "one billion, eighty million, seven hundred seventy-nine thousand, eight hundred".