1081862720 has 56 divisors (see below), whose sum is σ = 2583874944. Its totient is φ = 431453696.

The previous prime is 1081862699. The next prime is 1081862741. The reversal of 1081862720 is 272681801.

It is an interprime number because it is at equal distance from previous prime (1081862699) and next prime (1081862741).

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 7 ways as a sum of consecutive naturals, for example, 106169 + ... + 115911.

It is an arithmetic number, because the mean of its divisors is an integer number (46140624).

Almost surely, 2^1081862720 is an apocalyptic number.

1081862720 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 1081862720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291937472).

1081862720 is an abundant number, since it is smaller than the sum of its proper divisors (1502012224).

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

1081862720 is an equidigital number, since it uses as much as digits as its factorization.

1081862720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107 (or 10097 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 1081862720 is about 32891.6816231703. The cubic root of 1081862720 is about 1026.5750822522.

The spelling of 1081862720 in words is "one billion, eighty-one million, eight hundred sixty-two thousand, seven hundred twenty".