428874517 has 8 divisors (see below), whose sum is σ = 451642400. Its totient is φ = 406126224.

The previous prime is 428874503. The next prime is 428874541. The reversal of 428874517 is 715478824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428874517 - 2²³ = 420485909 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 (428874547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68023 + ... + 74059.

It is an arithmetic number, because the mean of its divisors is an integer number (56455300).

Almost surely, 2^428874517 is an apocalyptic number.

It is an amenable number.

428874517 is a deficient number, since it is larger than the sum of its proper divisors (22767883).

428874517 is a wasteful number, since it uses less digits than its factorization.

428874517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9795.

The product of its digits is 501760, while the sum is 46.

The square root of 428874517 is about 20709.2857675005. The cubic root of 428874517 is about 754.1251313830.

The spelling of 428874517 in words is "four hundred twenty-eight million, eight hundred seventy-four thousand, five hundred seventeen".