1081782240 has 192 divisors, whose sum is σ = 4248599040. Its totient is φ = 224778240.

The previous prime is 1081782223. The next prime is 1081782241. The reversal of 1081782240 is 422871801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081782241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22326 + ... + 51594.

It is an arithmetic number, because the mean of its divisors is an integer number (22128120).

Almost surely, 2^1081782240 is an apocalyptic number.

1081782240 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 1081782240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2124299520).

1081782240 is an abundant number, since it is smaller than the sum of its proper divisors (3166816800).

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

1081782240 is a wasteful number, since it uses less digits than its factorization.

1081782240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29305 (or 29297 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 1081782240 is about 32890.4581907884. The cubic root of 1081782240 is about 1026.5496259074.

The spelling of 1081782240 in words is "one billion, eighty-one million, seven hundred eighty-two thousand, two hundred forty".