43128880 has 20 divisors (see below), whose sum is σ = 100274832. Its totient is φ = 17251520.

The previous prime is 43128863. The next prime is 43128931. The reversal of 43128880 is 8882134.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269476 + ... + 269635.

Almost surely, 2^43128880 is an apocalyptic number.

43128880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43128880 is an abundant number, since it is smaller than the sum of its proper divisors (57145952).

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

43128880 is a wasteful number, since it uses less digits than its factorization.

43128880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539124 (or 539118 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 43128880 is about 6567.2581797886. The cubic root of 43128880 is about 350.6894708400.

The spelling of 43128880 in words is "forty-three million, one hundred twenty-eight thousand, eight hundred eighty".