130440 has 32 divisors (see below), whose sum is σ = 391680. Its totient is φ = 34752.

The previous prime is 130439. The next prime is 130447. The reversal of 130440 is 44031.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (12240).

2¹³⁰⁴⁴⁰ is an apocalyptic number.

130440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130440 is an abundant number, since it is smaller than the sum of its proper divisors (261240).

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

130440 is a wasteful number, since it uses less digits than its factorization.

130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 130440 is about 361.1647823363. The cubic root of 130440 is about 50.7150584139.

Adding to 130440 its reverse (44031), we get a palindrome (174471).

The spelling of 130440 in words is "one hundred thirty thousand, four hundred forty".