82547808 has 48 divisors (see below), whose sum is σ = 247645440. Its totient is φ = 23584896.

The previous prime is 82547789. The next prime is 82547821. The reversal of 82547808 is 80874528.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 82547808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60748 + ... + 62091.

It is an arithmetic number, because the mean of its divisors is an integer number (5159280).

Almost surely, 2^82547808 is an apocalyptic number.

It is an amenable number.

82547808 is an abundant number, since it is smaller than the sum of its proper divisors (165097632).

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

82547808 is a wasteful number, since it uses less digits than its factorization.

82547808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122859 (or 122851 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 82547808 is about 9085.5824249192. The cubic root of 82547808 is about 435.4134581278.

The spelling of 82547808 in words is "eighty-two million, five hundred forty-seven thousand, eight hundred eight".