855015228 has 36 divisors (see below), whose sum is σ = 2191735728. Its totient is φ = 280990080.

The previous prime is 855015167. The next prime is 855015229. The reversal of 855015228 is 822510558.

855015228 is a `hidden beast` number, since 85 + 50 + 1 + 522 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×855015228³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a junction number, because it is equal to n+sod(n) for n = 855015192 and 855015201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855015229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164701 + ... + 169812.

It is an arithmetic number, because the mean of its divisors is an integer number (60881548).

Almost surely, 2^855015228 is an apocalyptic number.

It is an amenable number.

855015228 is an abundant number, since it is smaller than the sum of its proper divisors (1336720500).

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

855015228 is a wasteful number, since it uses less digits than its factorization.

855015228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334594 (or 334589 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 855015228 is about 29240.6434265732. The cubic root of 855015228 is about 949.1276305569.

The spelling of 855015228 in words is "eight hundred fifty-five million, fifteen thousand, two hundred twenty-eight".