130928 has 30 divisors (see below), whose sum is σ = 296856. Its totient is φ = 55776.

The previous prime is 130927. The next prime is 130957. The reversal of 130928 is 829031.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 701 + ... + 867.

2¹³⁰⁹²⁸ 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 130928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148428).

130928 is an abundant number, since it is smaller than the sum of its proper divisors (165928).

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

130928 is a wasteful number, since it uses less digits than its factorization.

130928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 130928 is about 361.8397435330. The cubic root of 130928 is about 50.7782244904.

Adding to 130928 its reverse (829031), we get a palindrome (959959).

The spelling of 130928 in words is "one hundred thirty thousand, nine hundred twenty-eight".