43481520 has 120 divisors (see below), whose sum is σ = 147459312. Its totient is φ = 11481600.

The previous prime is 43481513. The next prime is 43481551. The reversal of 43481520 is 2518434.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94090 + ... + 94550.

Almost surely, 2^43481520 is an apocalyptic number.

43481520 is a gapful number since it is divisible by the number (40) 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 43481520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73729656).

43481520 is an abundant number, since it is smaller than the sum of its proper divisors (103977792).

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

43481520 is a wasteful number, since it uses less digits than its factorization.

43481520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 43481520 is about 6594.0518651281. The cubic root of 43481520 is about 351.6426728562.

Adding to 43481520 its reverse (2518434), we get a palindrome (45999954).

The spelling of 43481520 in words is "forty-three million, four hundred eighty-one thousand, five hundred twenty".