285369802890 has 128 divisors (see below), whose sum is σ = 736452864000. Its totient is φ = 70553514240.

The previous prime is 285369802867. The next prime is 285369802919. The reversal of 285369802890 is 98208963582.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6898609 + ... + 6939851.

It is an arithmetic number, because the mean of its divisors is an integer number (5753538000).

Almost surely, 2^285369802890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285369802890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368226432000).

285369802890 is an abundant number, since it is smaller than the sum of its proper divisors (451083061110).

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

285369802890 is a wasteful number, since it uses less digits than its factorization.

285369802890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41532.

The product of its (nonzero) digits is 14929920, while the sum is 60.

The spelling of 285369802890 in words is "two hundred eighty-five billion, three hundred sixty-nine million, eight hundred two thousand, eight hundred ninety".