82505286 has 12 divisors (see below), whose sum is σ = 178761492. Its totient is φ = 27501756.

The previous prime is 82505279. The next prime is 82505287. The reversal of 82505286 is 68250528.

82505286 is a `hidden beast` number, since 82 + 50 + 528 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 82505286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82505287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2291796 + ... + 2291831.

It is an arithmetic number, because the mean of its divisors is an integer number (14896791).

Almost surely, 2^82505286 is an apocalyptic number.

82505286 is an abundant number, since it is smaller than the sum of its proper divisors (96256206).

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

82505286 is a wasteful number, since it uses less digits than its factorization.

82505286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583635 (or 4583632 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 82505286 is about 9083.2420423547. The cubic root of 82505286 is about 435.3386819404.

The spelling of 82505286 in words is "eighty-two million, five hundred five thousand, two hundred eighty-six".