1081288560 has 80 divisors (see below), whose sum is σ = 3656730240. Its totient is φ = 262129920.

The previous prime is 1081288543. The next prime is 1081288561. The reversal of 1081288560 is 658821801.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081288561) by changing a digit.

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, 202150 + ... + 207429.

It is an arithmetic number, because the mean of its divisors is an integer number (45709128).

Almost surely, 2^1081288560 is an apocalyptic number.

1081288560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081288560 is an abundant number, since it is smaller than the sum of its proper divisors (2575441680).

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

1081288560 is a wasteful number, since it uses less digits than its factorization.

1081288560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409606 (or 409600 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 39.

The square root of 1081288560 is about 32882.9524221898. The cubic root of 1081288560 is about 1026.3934440955.

The spelling of 1081288560 in words is "one billion, eighty-one million, two hundred eighty-eight thousand, five hundred sixty".