285506876 has 6 divisors (see below), whose sum is σ = 499637040. Its totient is φ = 142753436.

The previous prime is 285506831. The next prime is 285506909. The reversal of 285506876 is 678605582.

It is a self number, because there is not a number n which added to its sum of digits gives 285506876.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 35688356 + ... + 35688363.

It is an arithmetic number, because the mean of its divisors is an integer number (83272840).

Almost surely, 2^285506876 is an apocalyptic number.

It is an amenable number.

285506876 is a deficient number, since it is larger than the sum of its proper divisors (214130164).

285506876 is a wasteful number, since it uses less digits than its factorization.

285506876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71376723 (or 71376721 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 285506876 is about 16896.9487186296. The cubic root of 285506876 is about 658.4743425486.

The spelling of 285506876 in words is "two hundred eighty-five million, five hundred six thousand, eight hundred seventy-six".