421728300 has 324 divisors, whose sum is σ = 1570665096. Its totient is φ = 94348800.

The previous prime is 421728289. The next prime is 421728301. The reversal of 421728300 is 3827124.

It is not an unprimeable number, because it can be changed into a prime (421728301) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3219235 + ... + 3219365.

Almost surely, 2^421728300 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 421728300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (785332548).

421728300 is an abundant number, since it is smaller than the sum of its proper divisors (1148936796).

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

421728300 is a wasteful number, since it uses less digits than its factorization.

421728300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 421728300 is about 20536.0244448627. The cubic root of 421728300 is about 749.9130565882.

The spelling of 421728300 in words is "four hundred twenty-one million, seven hundred twenty-eight thousand, three hundred".