428618238873 has 8 divisors (see below), whose sum is σ = 623444711136. Its totient is φ = 259768629600.

The previous prime is 428618238857. The next prime is 428618238883. The reversal of 428618238873 is 378832816824.

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

It is not a de Polignac number, because 428618238873 - 2⁴ = 428618238857 is a prime.

It is a super-3 number, since 3×428618238873³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (428618238883) 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, 6494215708 + ... + 6494215773.

It is an arithmetic number, because the mean of its divisors is an integer number (77930588892).

Almost surely, 2^428618238873 is an apocalyptic number.

It is an amenable number.

428618238873 is a deficient number, since it is larger than the sum of its proper divisors (194826472263).

428618238873 is a wasteful number, since it uses less digits than its factorization.

428618238873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12988431495.

The product of its digits is 24772608, while the sum is 60.

The spelling of 428618238873 in words is "four hundred twenty-eight billion, six hundred eighteen million, two hundred thirty-eight thousand, eight hundred seventy-three".