285538896 has 30 divisors (see below), whose sum is σ = 799112730. Its totient is φ = 95179584.

The previous prime is 285538889. The next prime is 285538933. The reversal of 285538896 is 698835582.

285538896 is a `hidden beast` number, since 2 + 8 + 553 + 8 + 89 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 251666496 + 33872400 = 15864^2 + 5820^2 .

It is a super-2 number, since 2×285538896² = 163064922257797632, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 991311 + ... + 991598.

It is an arithmetic number, because the mean of its divisors is an integer number (26637091).

Almost surely, 2^285538896 is an apocalyptic number.

It is an amenable number.

285538896 is an abundant number, since it is smaller than the sum of its proper divisors (513573834).

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

285538896 is a wasteful number, since it uses less digits than its factorization.

285538896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982923 (or 1982914 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The square root of 285538896 is about 16897.8962004150. The cubic root of 285538896 is about 658.4989579047.

The spelling of 285538896 in words is "two hundred eighty-five million, five hundred thirty-eight thousand, eight hundred ninety-six".