130638 has 8 divisors (see below), whose sum is σ = 261288. Its totient is φ = 43544.

The previous prime is 130633. The next prime is 130639. The reversal of 130638 is 836031.

It is a sphenic number, since it is the product of 3 distinct primes.

130638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130631) by changing a digit.

130638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10881 + ... + 10892.

It is an arithmetic number, because the mean of its divisors is an integer number (32661).

2¹³⁰⁶³⁸ is an apocalyptic number.

130638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

130638 is a wasteful number, since it uses less digits than its factorization.

130638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21778.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 130638 is about 361.4387914986. The cubic root of 130638 is about 50.7407062341.

Adding to 130638 its reverse (836031), we get a palindrome (966669).

The spelling of 130638 in words is "one hundred thirty thousand, six hundred thirty-eight".