855054720 has 384 divisors, whose sum is σ = 3352658400. Its totient is φ = 199065600.

The previous prime is 855054703. The next prime is 855054721. The reversal of 855054720 is 27450558.

It is a happy number.

855054720 is a `hidden beast` number, since 85 + 505 + 4 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×855054720² = 1462237148388556800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855054721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1422420 + ... + 1423020.

Almost surely, 2^855054720 is an apocalyptic number.

855054720 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 855054720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676329200).

855054720 is an abundant number, since it is smaller than the sum of its proper divisors (2497603680).

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

855054720 is a wasteful number, since it uses less digits than its factorization.

855054720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 855054720 is about 29241.3187117134. The cubic root of 855054720 is about 949.1422433069.

The spelling of 855054720 in words is "eight hundred fifty-five million, fifty-four thousand, seven hundred twenty".