82505884 has 12 divisors (see below), whose sum is σ = 145787824. Its totient is φ = 40852224.

The previous prime is 82505867. The next prime is 82505887. The reversal of 82505884 is 48850528.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82505887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99717 + ... + 100540.

Almost surely, 2^82505884 is an apocalyptic number.

It is an amenable number.

82505884 is a deficient number, since it is larger than the sum of its proper divisors (63281940).

82505884 is a wasteful number, since it uses less digits than its factorization.

82505884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200364 (or 200362 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 82505884 is about 9083.2749600571. The cubic root of 82505884 is about 435.3397337191.

The spelling of 82505884 in words is "eighty-two million, five hundred five thousand, eight hundred eighty-four".