504221430 has 64 divisors (see below), whose sum is σ = 1281692160. Its totient is φ = 126595584.

The previous prime is 504221413. The next prime is 504221437. The reversal of 504221430 is 34122405.

It is a junction number, because it is equal to n+sod(n) for n = 504221397 and 504221406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504221437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92542 + ... + 97838.

It is an arithmetic number, because the mean of its divisors is an integer number (20026440).

Almost surely, 2^504221430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 504221430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640846080).

504221430 is an abundant number, since it is smaller than the sum of its proper divisors (777470730).

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

504221430 is a wasteful number, since it uses less digits than its factorization.

504221430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 504221430 is about 22454.8754171561. The cubic root of 504221430 is about 795.9279698380.

Adding to 504221430 its reverse (34122405), we get a palindrome (538343835).

The spelling of 504221430 in words is "five hundred four million, two hundred twenty-one thousand, four hundred thirty".