774428 has 6 divisors (see below), whose sum is σ = 1355256. Its totient is φ = 387212.

The previous prime is 774427. The next prime is 774439. The reversal of 774428 is 824477.

774428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 774394 and 774403.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 774428.

It is not an unprimeable number, because it can be changed into a prime (774427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96800 + ... + 96807.

It is an arithmetic number, because the mean of its divisors is an integer number (225876).

2⁷⁷⁴⁴²⁸ is an apocalyptic number.

It is an amenable number.

774428 is a deficient number, since it is larger than the sum of its proper divisors (580828).

774428 is a wasteful number, since it uses less digits than its factorization.

774428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193611 (or 193609 counting only the distinct ones).

The product of its digits is 12544, while the sum is 32.

The square root of 774428 is about 880.0159089471. The cubic root of 774428 is about 91.8319237497.

The spelling of 774428 in words is "seven hundred seventy-four thousand, four hundred twenty-eight".