285275856 has 40 divisors (see below), whose sum is σ = 749460960. Its totient is φ = 93479296.

The previous prime is 285275843. The next prime is 285275927. The reversal of 285275856 is 658572582.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47535 + ... + 53198.

It is an arithmetic number, because the mean of its divisors is an integer number (18736524).

Almost surely, 2^285275856 is an apocalyptic number.

It is an amenable number.

285275856 is an abundant number, since it is smaller than the sum of its proper divisors (464185104).

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

285275856 is a wasteful number, since it uses less digits than its factorization.

285275856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100803 (or 100797 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 48.

The square root of 285275856 is about 16890.1111896873. Note that the first 4 decimals coincide. The cubic root of 285275856 is about 658.2966914962.

The spelling of 285275856 in words is "two hundred eighty-five million, two hundred seventy-five thousand, eight hundred fifty-six".