855622880 has 96 divisors (see below), whose sum is σ = 2319528960. Its totient is φ = 292170240.

The previous prime is 855622879. The next prime is 855622961. The reversal of 855622880 is 88226558.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302111 + ... + 304929.

It is an arithmetic number, because the mean of its divisors is an integer number (24161760).

Almost surely, 2^855622880 is an apocalyptic number.

855622880 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 855622880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159764480).

855622880 is an abundant number, since it is smaller than the sum of its proper divisors (1463906080).

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

855622880 is a wasteful number, since it uses less digits than its factorization.

855622880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112 (or 3104 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 855622880 is about 29251.0321185424. The cubic root of 855622880 is about 949.3524229388.

The spelling of 855622880 in words is "eight hundred fifty-five million, six hundred twenty-two thousand, eight hundred eighty".