855187628 has 12 divisors (see below), whose sum is σ = 1505541072. Its totient is φ = 425033040.

The previous prime is 855187621. The next prime is 855187639. The reversal of 855187628 is 826781558.

It is not an unprimeable number, because it can be changed into a prime (855187621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639443 + ... + 640778.

It is an arithmetic number, because the mean of its divisors is an integer number (125461756).

Almost surely, 2^855187628 is an apocalyptic number.

It is an amenable number.

855187628 is a deficient number, since it is larger than the sum of its proper divisors (650353444).

855187628 is a wasteful number, since it uses less digits than its factorization.

855187628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280392 (or 1280390 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 50.

The square root of 855187628 is about 29243.5912295327. The cubic root of 855187628 is about 949.1914183514.

The spelling of 855187628 in words is "eight hundred fifty-five million, one hundred eighty-seven thousand, six hundred twenty-eight".