505400130 has 96 divisors (see below), whose sum is σ = 1374197760. Its totient is φ = 128718720.

The previous prime is 505400111. The next prime is 505400141. The reversal of 505400130 is 31004505.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219264 + ... + 221556.

It is an arithmetic number, because the mean of its divisors is an integer number (14314560).

Almost surely, 2^505400130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505400130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687098880).

505400130 is an abundant number, since it is smaller than the sum of its proper divisors (868797630).

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

505400130 is a wasteful number, since it uses less digits than its factorization.

505400130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416 (or 2413 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 505400130 is about 22481.1060670955. The cubic root of 505400130 is about 796.5476910926.

Adding to 505400130 its reverse (31004505), we get a palindrome (536404635).

The spelling of 505400130 in words is "five hundred five million, four hundred thousand, one hundred thirty".