1087379840 has 96 divisors (see below), whose sum is σ = 2761894800. Its totient is φ = 409296896.

The previous prime is 1087379803. The next prime is 1087379863. The reversal of 1087379840 is 489737801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182021 + ... + 187899.

Almost surely, 2^1087379840 is an apocalyptic number.

1087379840 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 1087379840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380947400).

1087379840 is an abundant number, since it is smaller than the sum of its proper divisors (1674514960).

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

1087379840 is an equidigital number, since it uses as much as digits as its factorization.

1087379840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5932 (or 5903 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 1087379840 is about 32975.4429841359. The cubic root of 1087379840 is about 1028.3171817213.

The spelling of 1087379840 in words is "one billion, eighty-seven million, three hundred seventy-nine thousand, eight hundred forty".