285039000 has 448 divisors, whose sum is σ = 1104891840. Its totient is φ = 68428800.

The previous prime is 285038989. The next prime is 285039061. The reversal of 285039000 is 930582.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 12392989 + ... + 12393011.

Almost surely, 2^285039000 is an apocalyptic number.

285039000 is a gapful number since it is divisible by the number (20) 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 285039000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552445920).

285039000 is an abundant number, since it is smaller than the sum of its proper divisors (819852840).

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

285039000 is a wasteful number, since it uses less digits than its factorization.

285039000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 285039000 is about 16883.0980569326. The cubic root of 285039000 is about 658.1144530416.

Adding to 285039000 its reverse (930582), we get a palindrome (285969582).

The spelling of 285039000 in words is "two hundred eighty-five million, thirty-nine thousand".