87000280 has 16 divisors (see below), whose sum is σ = 195750720. Its totient is φ = 34800096.

The previous prime is 87000241. The next prime is 87000281. The reversal of 87000280 is 8200078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87000281) 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 3 ways as a sum of consecutive naturals, for example, 1087464 + ... + 1087543.

It is an arithmetic number, because the mean of its divisors is an integer number (12234420).

Almost surely, 2^87000280 is an apocalyptic number.

It is an amenable number.

87000280 is an abundant number, since it is smaller than the sum of its proper divisors (108750440).

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

87000280 is a wasteful number, since it uses less digits than its factorization.

87000280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175018 (or 2175014 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 87000280 is about 9327.3940626522. The cubic root of 87000280 is about 443.1052375303.

The spelling of 87000280 in words is "eighty-seven million, two hundred eighty", and thus it is an aban number.