1087867840 has 56 divisors (see below), whose sum is σ = 2593329840. Its totient is φ = 434669568.

The previous prime is 1087867787. The next prime is 1087867843. The reversal of 1087867840 is 487687801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087867843) by changing a digit.

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, 504204 + ... + 506356.

Almost surely, 2^1087867840 is an apocalyptic number.

1087867840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087867840 is an abundant number, since it is smaller than the sum of its proper divisors (1505462000).

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

1087867840 is a wasteful number, since it uses less digits than its factorization.

1087867840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749 (or 3739 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 49.

The square root of 1087867840 is about 32982.8415998379. The cubic root of 1087867840 is about 1028.4709898987.

The spelling of 1087867840 in words is "one billion, eighty-seven million, eight hundred sixty-seven thousand, eight hundred forty".