1087987700 has 18 divisors (see below), whose sum is σ = 2360933526. Its totient is φ = 435195040.

The previous prime is 1087987697. The next prime is 1087987721. The reversal of 1087987700 is 77897801.

It can be written as a sum of positive squares in 3 ways, for example, as 270142096 + 817845604 = 16436^2 + 28598^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5439839 + ... + 5440038.

Almost surely, 2^1087987700 is an apocalyptic number.

1087987700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087987700 is an abundant number, since it is smaller than the sum of its proper divisors (1272945826).

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

1087987700 is a wasteful number, since it uses less digits than its factorization.

1087987700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10879891 (or 10879884 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 47.

The square root of 1087987700 is about 32984.6585551526. The cubic root of 1087987700 is about 1028.5087604198.

The spelling of 1087987700 in words is "one billion, eighty-seven million, nine hundred eighty-seven thousand, seven hundred".