43261728 has 24 divisors (see below), whose sum is σ = 113562288. Its totient is φ = 14420544.

The previous prime is 43261721. The next prime is 43261733. The reversal of 43261728 is 82716234.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (43261721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225226 + ... + 225417.

It is an arithmetic number, because the mean of its divisors is an integer number (4731762).

Almost surely, 2^43261728 is an apocalyptic number.

43261728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

43261728 is an abundant number, since it is smaller than the sum of its proper divisors (70300560).

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

43261728 is a wasteful number, since it uses less digits than its factorization.

43261728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450656 (or 450648 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 43261728 is about 6577.3648218721. The cubic root of 43261728 is about 351.0491729065.

The spelling of 43261728 in words is "forty-three million, two hundred sixty-one thousand, seven hundred twenty-eight".