130504638 has 16 divisors (see below), whose sum is σ = 284737536. Its totient is φ = 39546840.

The previous prime is 130504609. The next prime is 130504639. The reversal of 130504638 is 836405031.

It is a super-2 number, since 2×130504638² = 34062921079022088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130504639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988606 + ... + 988737.

It is an arithmetic number, because the mean of its divisors is an integer number (17796096).

Almost surely, 2^130504638 is an apocalyptic number.

130504638 is an abundant number, since it is smaller than the sum of its proper divisors (154232898).

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

130504638 is a wasteful number, since it uses less digits than its factorization.

130504638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977359.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 130504638 is about 11423.8626567374. The cubic root of 130504638 is about 507.2343411311.

Adding to 130504638 its reverse (836405031), we get a palindrome (966909669).

The spelling of 130504638 in words is "one hundred thirty million, five hundred four thousand, six hundred thirty-eight".