426844728 has 160 divisors (see below), whose sum is σ = 1293877200. Its totient is φ = 131010048.

The previous prime is 426844711. The next prime is 426844751. The reversal of 426844728 is 827448624.

It is a super-3 number, since 3×426844728³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 455076 + ... + 456012.

Almost surely, 2^426844728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426844728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646938600).

426844728 is an abundant number, since it is smaller than the sum of its proper divisors (867032472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426844728 is a wasteful number, since it uses less digits than its factorization.

426844728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011 (or 998 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 426844728 is about 20660.2209087899. The cubic root of 426844728 is about 752.9335348709.

The spelling of 426844728 in words is "four hundred twenty-six million, eight hundred forty-four thousand, seven hundred twenty-eight".