855212800 has 216 divisors, whose sum is σ = 2404030160. Its totient is φ = 298598400.

The previous prime is 855212791. The next prime is 855212807. The reversal of 855212800 is 8212558.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (855212807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1580530 + ... + 1581070.

Almost surely, 2^855212800 is an apocalyptic number.

855212800 is a gapful number since it is divisible by the number (80) 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 855212800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202015080).

855212800 is an abundant number, since it is smaller than the sum of its proper divisors (1548817360).

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

855212800 is a wasteful number, since it uses less digits than its factorization.

855212800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 855212800 is about 29244.0216112627. The cubic root of 855212800 is about 949.2007312442.

The spelling of 855212800 in words is "eight hundred fifty-five million, two hundred twelve thousand, eight hundred".