428593727 has 4 divisors (see below), whose sum is σ = 429588576. Its totient is φ = 427598880.

The previous prime is 428593709. The next prime is 428593751. The reversal of 428593727 is 727395824.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 428593727 - 2²⁴ = 411816511 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 (428593327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496778 + ... + 497639.

It is an arithmetic number, because the mean of its divisors is an integer number (107397144).

Almost surely, 2^428593727 is an apocalyptic number.

428593727 is a deficient number, since it is larger than the sum of its proper divisors (994849).

428593727 is an equidigital number, since it uses as much as digits as its factorization.

428593727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994848.

The product of its digits is 846720, while the sum is 47.

The square root of 428593727 is about 20702.5053314810. The cubic root of 428593727 is about 753.9605167804.

The spelling of 428593727 in words is "four hundred twenty-eight million, five hundred ninety-three thousand, seven hundred twenty-seven".