43040080 has 20 divisors (see below), whose sum is σ = 100068372. Its totient is φ = 17216000.

The previous prime is 43040077. The next prime is 43040083. The reversal of 43040080 is 8004034.

It is an interprime number because it is at equal distance from previous prime (43040077) and next prime (43040083).

It can be written as a sum of positive squares in 2 ways, for example, as 8088336 + 34951744 = 2844^2 + 5912^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43040083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268921 + ... + 269080.

Almost surely, 2^43040080 is an apocalyptic number.

43040080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43040080 is an abundant number, since it is smaller than the sum of its proper divisors (57028292).

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

43040080 is a wasteful number, since it uses less digits than its factorization.

43040080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538014 (or 538008 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 43040080 is about 6560.4938838475. The cubic root of 43040080 is about 350.4486219998.

The spelling of 43040080 in words is "forty-three million, forty thousand, eighty".