82800087 has 4 divisors (see below), whose sum is σ = 110400120. Its totient is φ = 55200056.

The previous prime is 82800059. The next prime is 82800089. The reversal of 82800087 is 78000828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82800087 - 2⁸ = 82799831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82800089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13800012 + ... + 13800017.

It is an arithmetic number, because the mean of its divisors is an integer number (27600030).

Almost surely, 2^82800087 is an apocalyptic number.

82800087 is a deficient number, since it is larger than the sum of its proper divisors (27600033).

82800087 is a wasteful number, since it uses less digits than its factorization.

82800087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27600032.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 82800087 is about 9099.4553133690. The cubic root of 82800087 is about 435.8565708815.

The spelling of 82800087 in words is "eighty-two million, eight hundred thousand, eighty-seven".