43049728 has 36 divisors (see below), whose sum is σ = 86359000. Its totient is φ = 21417984.

The previous prime is 43049701. The next prime is 43049749. The reversal of 43049728 is 82794034.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 86023 + ... + 86521.

Almost surely, 2^43049728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43049728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43179500).

43049728 is an abundant number, since it is smaller than the sum of its proper divisors (43309272).

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

43049728 is an equidigital number, since it uses as much as digits as its factorization.

43049728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 43049728 is about 6561.2291531389. The cubic root of 43049728 is about 350.4748059327.

The spelling of 43049728 in words is "forty-three million, forty-nine thousand, seven hundred twenty-eight".