775955328 has 64 divisors (see below), whose sum is σ = 2066275200. Its totient is φ = 258006528.

The previous prime is 775955321. The next prime is 775955353. The reversal of 775955328 is 823559577.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775955321) 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, 166275 + ... + 170877.

It is an arithmetic number, because the mean of its divisors is an integer number (32285550).

Almost surely, 2^775955328 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 775955328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033137600).

775955328 is an abundant number, since it is smaller than the sum of its proper divisors (1290319872).

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

775955328 is a wasteful number, since it uses less digits than its factorization.

775955328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059 (or 5047 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 51.

The square root of 775955328 is about 27855.9747271568. The cubic root of 775955328 is about 918.9225445568.

The spelling of 775955328 in words is "seven hundred seventy-five million, nine hundred fifty-five thousand, three hundred twenty-eight".