428804317 has 4 divisors (see below), whose sum is σ = 429105820. Its totient is φ = 428502816.

The previous prime is 428804251. The next prime is 428804339. The reversal of 428804317 is 713408824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42328036 + 386476281 = 6506^2 + 19659^2 .

It is a cyclic number.

It is not a de Polignac number, because 428804317 - 2¹⁵ = 428771549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428834317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148608 + ... + 151465.

It is an arithmetic number, because the mean of its divisors is an integer number (107276455).

Almost surely, 2^428804317 is an apocalyptic number.

It is an amenable number.

428804317 is a deficient number, since it is larger than the sum of its proper divisors (301503).

428804317 is a wasteful number, since it uses less digits than its factorization.

428804317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301502.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 428804317 is about 20707.5908062720. The cubic root of 428804317 is about 754.0839830044.

The spelling of 428804317 in words is "four hundred twenty-eight million, eight hundred four thousand, three hundred seventeen".