200028504 has 128 divisors (see below), whose sum is σ = 581414400. Its totient is φ = 56816640.

The previous prime is 200028487. The next prime is 200028529. The reversal of 200028504 is 405820002.

200028504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×200028504² = 80022804824956032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242637 + ... + 243459.

It is an arithmetic number, because the mean of its divisors is an integer number (4542300).

Almost surely, 2^200028504 is an apocalyptic number.

200028504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200028504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290707200).

200028504 is an abundant number, since it is smaller than the sum of its proper divisors (381385896).

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

200028504 is a wasteful number, since it uses less digits than its factorization.

200028504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 200028504 is about 14143.1433564113. The cubic root of 200028504 is about 584.8313283900.

Adding to 200028504 its reverse (405820002), we get a palindrome (605848506).

The spelling of 200028504 in words is "two hundred million, twenty-eight thousand, five hundred four".