855443280 has 80 divisors (see below), whose sum is σ = 2655080064. Its totient is φ = 227842560.

The previous prime is 855443257. The next prime is 855443297. The reversal of 855443280 is 82344558.

855443280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266485 + ... + 269675.

Almost surely, 2^855443280 is an apocalyptic number.

855443280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

855443280 is an abundant number, since it is smaller than the sum of its proper divisors (1799636784).

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

855443280 is a wasteful number, since it uses less digits than its factorization.

855443280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324 (or 4318 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 39.

The square root of 855443280 is about 29247.9619802816. The cubic root of 855443280 is about 949.2859935065.

The spelling of 855443280 in words is "eight hundred fifty-five million, four hundred forty-three thousand, two hundred eighty".