1080009040 has 80 divisors (see below), whose sum is σ = 2756073600. Its totient is φ = 390325760.

The previous prime is 1080009017. The next prime is 1080009041. The reversal of 1080009040 is 409000801.

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

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080009041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143286 + ... + 150634.

It is an arithmetic number, because the mean of its divisors is an integer number (34450920).

Almost surely, 2^1080009040 is an apocalyptic number.

1080009040 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 1080009040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1378036800).

1080009040 is an abundant number, since it is smaller than the sum of its proper divisors (1676064560).

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

1080009040 is a wasteful number, since it uses less digits than its factorization.

1080009040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7540 (or 7534 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1080009040 is about 32863.4909892422. The cubic root of 1080009040 is about 1025.9884306244.

Adding to 1080009040 its reverse (409000801), we get a palindrome (1489009841).

The spelling of 1080009040 in words is "one billion, eighty million, nine thousand, forty".