1104385280 has 72 divisors (see below), whose sum is σ = 2801011752. Its totient is φ = 415760384.

The previous prime is 1104385259. The next prime is 1104385313. The reversal of 1104385280 is 825834011.

It can be written as a sum of positive squares in 4 ways, for example, as 479785216 + 624600064 = 21904^2 + 24992^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

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 7 ways as a sum of consecutive naturals, for example, 3617 + ... + 47136.

It is an arithmetic number, because the mean of its divisors is an integer number (38902941).

Almost surely, 2^1104385280 is an apocalyptic number.

1104385280 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 1104385280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400505876).

1104385280 is an abundant number, since it is smaller than the sum of its proper divisors (1696626472).

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

1104385280 is an equidigital number, since it uses as much as digits as its factorization.

1104385280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50791 (or 50777 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 1104385280 is about 33232.2927286096. The cubic root of 1104385280 is about 1033.6500654691.

The spelling of 1104385280 in words is "one billion, one hundred four million, three hundred eighty-five thousand, two hundred eighty".