87311802 has 16 divisors (see below), whose sum is σ = 183814560. Its totient is φ = 27572112.

The previous prime is 87311789. The next prime is 87311839. The reversal of 87311802 is 20811378.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87311802.

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, 382833 + ... + 383060.

It is an arithmetic number, because the mean of its divisors is an integer number (11488410).

Almost surely, 2^87311802 is an apocalyptic number.

87311802 is an abundant number, since it is smaller than the sum of its proper divisors (96502758).

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

87311802 is a wasteful number, since it uses less digits than its factorization.

87311802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765917.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 87311802 is about 9344.0784457324. The cubic root of 87311802 is about 443.6334833410.

The spelling of 87311802 in words is "eighty-seven million, three hundred eleven thousand, eight hundred two".