428267517 has 4 divisors (see below), whose sum is σ = 571023360. Its totient is φ = 285511676.

The previous prime is 428267501. The next prime is 428267537. The reversal of 428267517 is 715762824.

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 428267517 - 2⁴ = 428267501 is a prime.

It is a super-2 number, since 2×428267517² = 366826132234690578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428267537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71377917 + ... + 71377922.

It is an arithmetic number, because the mean of its divisors is an integer number (142755840).

Almost surely, 2^428267517 is an apocalyptic number.

It is an amenable number.

428267517 is a deficient number, since it is larger than the sum of its proper divisors (142755843).

428267517 is a wasteful number, since it uses less digits than its factorization.

428267517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142755842.

The product of its digits is 188160, while the sum is 42.

The square root of 428267517 is about 20694.6253167338. The cubic root of 428267517 is about 753.7691841579.

The spelling of 428267517 in words is "four hundred twenty-eight million, two hundred sixty-seven thousand, five hundred seventeen".