130039808 has 30 divisors (see below), whose sum is σ = 260104446. Its totient is φ = 65011712.

The previous prime is 130039801. The next prime is 130039813. The reversal of 130039808 is 808930031.

It can be written as a sum of positive squares in only one way, i.e., 129777664 + 262144 = 11392^2 + 512^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (130039801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12416 + ... + 20352.

Almost surely, 2^130039808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130039808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130052223).

130039808 is an abundant number, since it is smaller than the sum of its proper divisors (130064638).

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

130039808 is an frugal number, since it uses more digits than its factorization.

130039808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7965 (or 7939 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 130039808 is about 11403.4998136537. The cubic root of 130039808 is about 506.6314041325.

Adding to 130039808 its reverse (808930031), we get a palindrome (938969839).

The spelling of 130039808 in words is "one hundred thirty million, thirty-nine thousand, eight hundred eight".