426728589 has 8 divisors (see below), whose sum is σ = 650253120. Its totient is φ = 243844896.

The previous prime is 426728539. The next prime is 426728641. The reversal of 426728589 is 985827624.

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

It is not a de Polignac number, because 426728589 - 2¹¹ = 426726541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426728539) 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 7 ways as a sum of consecutive naturals, for example, 10160184 + ... + 10160225.

It is an arithmetic number, because the mean of its divisors is an integer number (81281640).

Almost surely, 2^426728589 is an apocalyptic number.

It is an amenable number.

426728589 is a deficient number, since it is larger than the sum of its proper divisors (223524531).

426728589 is a wasteful number, since it uses less digits than its factorization.

426728589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20320419.

The product of its digits is 1935360, while the sum is 51.

The square root of 426728589 is about 20657.4100264288. The cubic root of 426728589 is about 752.8652408098.

The spelling of 426728589 in words is "four hundred twenty-six million, seven hundred twenty-eight thousand, five hundred eighty-nine".