428672823847 has 8 divisors (see below), whose sum is σ = 429055824096. Its totient is φ = 428289900192.

The previous prime is 428672823841. The next prime is 428672823851. The reversal of 428672823847 is 748328276824.

It is a happy number.

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 428672823847 - 2¹¹ = 428672821799 is a prime.

It is a super-2 number, since 2×428672823847² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428672823841) 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, 20264358 + ... + 20285500.

It is an arithmetic number, because the mean of its divisors is an integer number (53631978012).

Almost surely, 2^428672823847 is an apocalyptic number.

428672823847 is a deficient number, since it is larger than the sum of its proper divisors (383000249).

428672823847 is a wasteful number, since it uses less digits than its factorization.

428672823847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38297.

The product of its digits is 57802752, while the sum is 61.

The spelling of 428672823847 in words is "four hundred twenty-eight billion, six hundred seventy-two million, eight hundred twenty-three thousand, eight hundred forty-seven".