777228 has 24 divisors (see below), whose sum is σ = 1827840. Its totient is φ = 257040.

The previous prime is 777221. The next prime is 777241. The reversal of 777228 is 822777.

It is a happy number.

777228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (777221) by changing a digit.

777228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2733 + ... + 3003.

It is an arithmetic number, because the mean of its divisors is an integer number (76160).

2⁷⁷⁷²²⁸ is an apocalyptic number.

It is an amenable number.

777228 is an abundant number, since it is smaller than the sum of its proper divisors (1050612).

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

777228 is a wasteful number, since it uses less digits than its factorization.

777228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its digits is 10976, while the sum is 33.

The square root of 777228 is about 881.6053538857. The cubic root of 777228 is about 91.9424656023.

The spelling of 777228 in words is "seven hundred seventy-seven thousand, two hundred twenty-eight".