505004430 has 32 divisors (see below), whose sum is σ = 1385155584. Its totient is φ = 115429536.

The previous prime is 505004411. The next prime is 505004459. The reversal of 505004430 is 34400505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 505004397 and 505004406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1202182 + ... + 1202601.

It is an arithmetic number, because the mean of its divisors is an integer number (43286112).

Almost surely, 2^505004430 is an apocalyptic number.

505004430 is an abundant number, since it is smaller than the sum of its proper divisors (880151154).

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

505004430 is a wasteful number, since it uses less digits than its factorization.

505004430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404800.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 505004430 is about 22472.3036202344. The cubic root of 505004430 is about 796.3397527363.

Adding to 505004430 its reverse (34400505), we get a palindrome (539404935).

The spelling of 505004430 in words is "five hundred five million, four thousand, four hundred thirty".