130443544 has 64 divisors (see below), whose sum is σ = 306293760. Its totient is φ = 50595840.

The previous prime is 130443541. The next prime is 130443581. The reversal of 130443544 is 445344031.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130443541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225784 + ... + 226360.

It is an arithmetic number, because the mean of its divisors is an integer number (4785840).

Almost surely, 2^130443544 is an apocalyptic number.

130443544 is a gapful number since it is divisible by the number (14) 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 130443544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153146880).

130443544 is an abundant number, since it is smaller than the sum of its proper divisors (175850216).

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

130443544 is a wasteful number, since it uses less digits than its factorization.

130443544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 130443544 is about 11421.1883794989. The cubic root of 130443544 is about 507.1551771202.

Adding to 130443544 its reverse (445344031), we get a palindrome (575787575).

The spelling of 130443544 in words is "one hundred thirty million, four hundred forty-three thousand, five hundred forty-four".