1082391240 has 128 divisors (see below), whose sum is σ = 3906432000. Its totient is φ = 234379008.

The previous prime is 1082391239. The next prime is 1082391253. The reversal of 1082391240 is 421932801.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1082391198 and 1082391207.

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 31 ways as a sum of consecutive naturals, for example, 17950 + ... + 49869.

It is an arithmetic number, because the mean of its divisors is an integer number (30519000).

Almost surely, 2^1082391240 is an apocalyptic number.

1082391240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1082391240 is an abundant number, since it is smaller than the sum of its proper divisors (2824040760).

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

1082391240 is a wasteful number, since it uses less digits than its factorization.

1082391240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67859 (or 67855 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1082391240 is about 32899.7148923817. The cubic root of 1082391240 is about 1026.7422251881.

The spelling of 1082391240 in words is "one billion, eighty-two million, three hundred ninety-one thousand, two hundred forty".