775884228 has 144 divisors (see below), whose sum is σ = 2277938880. Its totient is φ = 204228864.

The previous prime is 775884227. The next prime is 775884251. The reversal of 775884228 is 822488577.

It is not an unprimeable number, because it can be changed into a prime (775884227) 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, 412426 + ... + 414302.

It is an arithmetic number, because the mean of its divisors is an integer number (15819020).

Almost surely, 2^775884228 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 775884228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138969440).

775884228 is an abundant number, since it is smaller than the sum of its proper divisors (1502054652).

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

775884228 is a wasteful number, since it uses less digits than its factorization.

775884228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954 (or 1945 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 51.

The square root of 775884228 is about 27854.6984905599. The cubic root of 775884228 is about 918.8944770525.

The spelling of 775884228 in words is "seven hundred seventy-five million, eight hundred eighty-four thousand, two hundred twenty-eight".