428504100 has 72 divisors (see below), whose sum is σ = 1254815520. Its totient is φ = 112884480.

The previous prime is 428504081. The next prime is 428504101. The reversal of 428504100 is 1405824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428504101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16296 + ... + 33504.

Almost surely, 2^428504100 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 428504100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627407760).

428504100 is an abundant number, since it is smaller than the sum of its proper divisors (826311420).

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

428504100 is a wasteful number, since it uses less digits than its factorization.

428504100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17309 (or 17302 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 428504100 is about 20700.3405769084. The cubic root of 428504100 is about 753.9079573471.

Adding to 428504100 its reverse (1405824), we get a palindrome (429909924).

The spelling of 428504100 in words is "four hundred twenty-eight million, five hundred four thousand, one hundred".