82508447 has 8 divisors (see below), whose sum is σ = 94379136. Its totient is φ = 70658712.

The previous prime is 82508411. The next prime is 82508467. The reversal of 82508447 is 74480528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82508447 - 2¹⁰ = 82507423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82508447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82508407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4388 + ... + 13574.

It is an arithmetic number, because the mean of its divisors is an integer number (11797392).

Almost surely, 2^82508447 is an apocalyptic number.

82508447 is a deficient number, since it is larger than the sum of its proper divisors (11870689).

82508447 is a wasteful number, since it uses less digits than its factorization.

82508447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10477.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 82508447 is about 9083.4160424369. The cubic root of 82508447 is about 435.3442415357.

The spelling of 82508447 in words is "eighty-two million, five hundred eight thousand, four hundred forty-seven".