845758228 has 72 divisors (see below), whose sum is σ = 1865711232. Its totient is φ = 333156096.

The previous prime is 845758223. The next prime is 845758237. The reversal of 845758228 is 822857548.

845758228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845758223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140325 + ... + 146227.

It is an arithmetic number, because the mean of its divisors is an integer number (25912656).

Almost surely, 2^845758228 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 845758228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932855616).

845758228 is an abundant number, since it is smaller than the sum of its proper divisors (1019953004).

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

845758228 is a wasteful number, since it uses less digits than its factorization.

845758228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981 (or 5972 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 49.

The square root of 845758228 is about 29081.9227012246. The cubic root of 845758228 is about 945.6898848963.

The spelling of 845758228 in words is "eight hundred forty-five million, seven hundred fifty-eight thousand, two hundred twenty-eight".