285028650 has 72 divisors (see below), whose sum is σ = 799100640. Its totient is φ = 72700320.

The previous prime is 285028609. The next prime is 285028669. The reversal of 285028650 is 56820582.

285028650 is a `hidden beast` number, since 28 + 502 + 86 + 50 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3420 + ... + 24119.

It is an arithmetic number, because the mean of its divisors is an integer number (11098620).

Almost surely, 2^285028650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285028650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399550320).

285028650 is an abundant number, since it is smaller than the sum of its proper divisors (514071990).

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

285028650 is a wasteful number, since it uses less digits than its factorization.

285028650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27580 (or 27572 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 285028650 is about 16882.7915345774. The cubic root of 285028650 is about 658.1064873866.

The spelling of 285028650 in words is "two hundred eighty-five million, twenty-eight thousand, six hundred fifty".