130444240 has 80 divisors (see below), whose sum is σ = 314836992. Its totient is φ = 50222592.

The previous prime is 130444229. The next prime is 130444267. The reversal of 130444240 is 42444031.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375747 + ... + 376093.

Almost surely, 2^130444240 is an apocalyptic number.

130444240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130444240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157418496).

130444240 is an abundant number, since it is smaller than the sum of its proper divisors (184392752).

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

130444240 is a wasteful number, since it uses less digits than its factorization.

130444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 130444240 is about 11421.2188491422. The cubic root of 130444240 is about 507.1560791180.

Adding to 130444240 its reverse (42444031), we get a palindrome (172888271).

The spelling of 130444240 in words is "one hundred thirty million, four hundred forty-four thousand, two hundred forty".