285366928 has 160 divisors (see below), whose sum is σ = 739952640. Its totient is φ = 103265280.

The previous prime is 285366859. The next prime is 285366937. The reversal of 285366928 is 829663582.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1708701 + ... + 1708867.

It is an arithmetic number, because the mean of its divisors is an integer number (4624704).

Almost surely, 2^285366928 is an apocalyptic number.

285366928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285366928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369976320).

285366928 is an abundant number, since it is smaller than the sum of its proper divisors (454585712).

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

285366928 is a wasteful number, since it uses less digits than its factorization.

285366928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 279 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 285366928 is about 16892.8069899588. The cubic root of 285366928 is about 658.3667360003.

The spelling of 285366928 in words is "two hundred eighty-five million, three hundred sixty-six thousand, nine hundred twenty-eight".