130205000 has 40 divisors (see below), whose sum is σ = 305082030. Its totient is φ = 52080000.

The previous prime is 130204981. The next prime is 130205011. The reversal of 130205000 is 502031.

It can be written as a sum of positive squares in 5 ways, for example, as 17123044 + 113081956 = 4138^2 + 10634^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8021 + ... + 18020.

Almost surely, 2^130205000 is an apocalyptic number.

130205000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130205000 is an abundant number, since it is smaller than the sum of its proper divisors (174877030).

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

130205000 is an equidigital number, since it uses as much as digits as its factorization.

130205000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26067 (or 26048 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 130205000 is about 11410.7405544075. The cubic root of 130205000 is about 506.8458411395.

Adding to 130205000 its reverse (502031), we get a palindrome (130707031).

The spelling of 130205000 in words is "one hundred thirty million, two hundred five thousand".