775228 has 24 divisors (see below), whose sum is σ = 1446480. Its totient is φ = 362880.

The previous prime is 775193. The next prime is 775237. The reversal of 775228 is 822577.

It is a self number, because there is not a number n which added to its sum of digits gives 775228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4675 + ... + 4837.

It is an arithmetic number, because the mean of its divisors is an integer number (60270).

2⁷⁷⁵²²⁸ is an apocalyptic number.

It is an amenable number.

775228 is a deficient number, since it is larger than the sum of its proper divisors (671252).

775228 is a wasteful number, since it uses less digits than its factorization.

775228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 235 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 775228 is about 880.4703288584. The cubic root of 775228 is about 91.8635342873.

The spelling of 775228 in words is "seven hundred seventy-five thousand, two hundred twenty-eight".