1100045280 has 96 divisors (see below), whose sum is σ = 3647548800. Its totient is φ = 277903872.

The previous prime is 1100045267. The next prime is 1100045321. The reversal of 1100045280 is 825400011.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51190 + ... + 69429.

It is an arithmetic number, because the mean of its divisors is an integer number (37995300).

Almost surely, 2^1100045280 is an apocalyptic number.

1100045280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100045280 is an abundant number, since it is smaller than the sum of its proper divisors (2547503520).

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

1100045280 is a wasteful number, since it uses less digits than its factorization.

1100045280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120656 (or 120648 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1100045280 is about 33166.9305182135. The cubic root of 1100045280 is about 1032.2942793965.

Adding to 1100045280 its reverse (825400011), we get a palindrome (1925445291).

It can be divided in two parts, 11000 and 45280, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 1100045280 in words is "one billion, one hundred million, forty-five thousand, two hundred eighty".