85828890 has 128 divisors (see below), whose sum is σ = 253440000. Its totient is φ = 18543168.

The previous prime is 85828877. The next prime is 85828901. The reversal of 85828890 is 9882858.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 195291 + ... + 195729.

It is an arithmetic number, because the mean of its divisors is an integer number (1980000).

Almost surely, 2^85828890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85828890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126720000).

85828890 is an abundant number, since it is smaller than the sum of its proper divisors (167611110).

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

85828890 is a wasteful number, since it uses less digits than its factorization.

85828890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The square root of 85828890 is about 9264.3882690656. The cubic root of 85828890 is about 441.1075575394.

The spelling of 85828890 in words is "eighty-five million, eight hundred twenty-eight thousand, eight hundred ninety".