82028587 has 4 divisors (see below), whose sum is σ = 86853816. Its totient is φ = 77203360.

The previous prime is 82028581. The next prime is 82028599. The reversal of 82028587 is 78582028.

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 82028587 - 2¹⁵ = 81995819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82028581) 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, 2412589 + ... + 2412622.

It is an arithmetic number, because the mean of its divisors is an integer number (21713454).

Almost surely, 2^82028587 is an apocalyptic number.

82028587 is a deficient number, since it is larger than the sum of its proper divisors (4825229).

82028587 is a wasteful number, since it uses less digits than its factorization.

82028587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825228.

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 82028587 is about 9056.9634536085. The cubic root of 82028587 is about 434.4986287649.

The spelling of 82028587 in words is "eighty-two million, twenty-eight thousand, five hundred eighty-seven".