285487072 has 24 divisors (see below), whose sum is σ = 605288376. Its totient is φ = 131763072.

The previous prime is 285487061. The next prime is 285487087. The reversal of 285487072 is 270784582.

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 3 ways as a sum of consecutive naturals, for example, 342718 + ... + 343549.

It is an arithmetic number, because the mean of its divisors is an integer number (25220349).

Almost surely, 2^285487072 is an apocalyptic number.

It is an amenable number.

285487072 is an abundant number, since it is smaller than the sum of its proper divisors (319801304).

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

285487072 is a wasteful number, since it uses less digits than its factorization.

285487072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686290 (or 686282 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 285487072 is about 16896.3626855013. The cubic root of 285487072 is about 658.4591173141.

The spelling of 285487072 in words is "two hundred eighty-five million, four hundred eighty-seven thousand, seventy-two".