87071800 has 24 divisors (see below), whose sum is σ = 202442400. Its totient is φ = 34828640.

The previous prime is 87071791. The next prime is 87071801. The reversal of 87071800 is 817078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87071801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217480 + ... + 217879.

It is an arithmetic number, because the mean of its divisors is an integer number (8435100).

Almost surely, 2^87071800 is an apocalyptic number.

It is an amenable number.

87071800 is an abundant number, since it is smaller than the sum of its proper divisors (115370600).

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

87071800 is a wasteful number, since it uses less digits than its factorization.

87071800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435375 (or 435366 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 87071800 is about 9331.2271433076. The cubic root of 87071800 is about 443.2266249042.

Adding to 87071800 its reverse (817078), we get a palindrome (87888878).

The spelling of 87071800 in words is "eighty-seven million, seventy-one thousand, eight hundred".