1087174820 has 24 divisors (see below), whose sum is σ = 2417365944. Its totient is φ = 409289216.

The previous prime is 1087174801. The next prime is 1087174831. The reversal of 1087174820 is 284717801.

It can be written as a sum of positive squares in 4 ways, for example, as 264517696 + 822657124 = 16264^2 + 28682^2 .

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, 1598447 + ... + 1599126.

It is an arithmetic number, because the mean of its divisors is an integer number (100723581).

Almost surely, 2^1087174820 is an apocalyptic number.

1087174820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087174820 is an abundant number, since it is smaller than the sum of its proper divisors (1330191124).

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

1087174820 is a wasteful number, since it uses less digits than its factorization.

1087174820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197599 (or 3197597 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 1087174820 is about 32972.3341606262. The cubic root of 1087174820 is about 1028.2525496482.

The spelling of 1087174820 in words is "one billion, eighty-seven million, one hundred seventy-four thousand, eight hundred twenty".