855800528 has 80 divisors (see below), whose sum is σ = 1875790656. Its totient is φ = 374814720.

The previous prime is 855800513. The next prime is 855800551. The reversal of 855800528 is 825008558.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 735275 + ... + 736437.

Almost surely, 2^855800528 is an apocalyptic number.

855800528 is a gapful number since it is divisible by the number (88) 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 855800528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937895328).

855800528 is an abundant number, since it is smaller than the sum of its proper divisors (1019990128).

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

855800528 is a wasteful number, since it uses less digits than its factorization.

855800528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 41.

The square root of 855800528 is about 29254.0685717389. The cubic root of 855800528 is about 949.4181212320.

The spelling of 855800528 in words is "eight hundred fifty-five million, eight hundred thousand, five hundred twenty-eight".