855478272 has 104 divisors (see below), whose sum is σ = 2488753440. Its totient is φ = 259194880.

The previous prime is 855478271. The next prime is 855478289. The reversal of 855478272 is 272874558.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (855478271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132004 + ... + 138332.

Almost surely, 2^855478272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855478272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1244376720).

855478272 is an abundant number, since it is smaller than the sum of its proper divisors (1633275168).

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

855478272 is a wasteful number, since it uses less digits than its factorization.

855478272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367 (or 6345 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 48.

The square root of 855478272 is about 29248.5601696904. The cubic root of 855478272 is about 949.2989368789.

The spelling of 855478272 in words is "eight hundred fifty-five million, four hundred seventy-eight thousand, two hundred seventy-two".