1047905280 has 132 divisors (see below), whose sum is σ = 3631124172. Its totient is φ = 279429120.

The previous prime is 1047905237. The next prime is 1047905297. The reversal of 1047905280 is 825097401.

1047905280 is a `hidden beast` number, since 1 + 0 + 47 + 90 + 528 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 212926464 + 834978816 = 14592^2 + 28896^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 34710 + ... + 57450.

Almost surely, 2^1047905280 is an apocalyptic number.

1047905280 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 1047905280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1815562086).

1047905280 is an abundant number, since it is smaller than the sum of its proper divisors (2583218892).

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

1047905280 is a wasteful number, since it uses less digits than its factorization.

1047905280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22772 (or 22751 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1047905280 is about 32371.3651241340. The cubic root of 1047905280 is about 1015.7200129557.

The spelling of 1047905280 in words is "one billion, forty-seven million, nine hundred five thousand, two hundred eighty".