43040256 has 80 divisors (see below), whose sum is σ = 131074944. Its totient is φ = 12294144.

The previous prime is 43040251. The next prime is 43040299. The reversal of 43040256 is 65204034.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43040251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8751 + ... + 12753.

Almost surely, 2^43040256 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 43040256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65537472).

43040256 is an abundant number, since it is smaller than the sum of its proper divisors (88034688).

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

43040256 is an equidigital number, since it uses as much as digits as its factorization.

43040256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031 (or 4015 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 43040256 is about 6560.5072974580. The cubic root of 43040256 is about 350.4490996854.

The spelling of 43040256 in words is "forty-three million, forty thousand, two hundred fifty-six".