428475517 has 4 divisors (see below), whose sum is σ = 451026880. Its totient is φ = 405924156.

The previous prime is 428475499. The next prime is 428475581. The reversal of 428475517 is 715574824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428475517 - 2¹⁹ = 427951229 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 (428475217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11275653 + ... + 11275690.

It is an arithmetic number, because the mean of its divisors is an integer number (112756720).

Almost surely, 2^428475517 is an apocalyptic number.

It is an amenable number.

428475517 is a deficient number, since it is larger than the sum of its proper divisors (22551363).

428475517 is a wasteful number, since it uses less digits than its factorization.

428475517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22551362.

The product of its digits is 313600, while the sum is 43.

The square root of 428475517 is about 20699.6501661260. The cubic root of 428475517 is about 753.8911940456.

The spelling of 428475517 in words is "four hundred twenty-eight million, four hundred seventy-five thousand, five hundred seventeen".