43238081 has 8 divisors (see below), whose sum is σ = 44075304. Its totient is φ = 42405120.

The previous prime is 43238071. The next prime is 43238093. The reversal of 43238081 is 18083234.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7728400 + 35509681 = 2780^2 + 5959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43238081 - 2⁶ = 43238017 is a prime.

It is a super-2 number, since 2×43238081² = 3739063297125122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43238071) 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 7 ways as a sum of consecutive naturals, for example, 25595 + ... + 27231.

It is an arithmetic number, because the mean of its divisors is an integer number (5509413).

Almost surely, 2^43238081 is an apocalyptic number.

It is an amenable number.

43238081 is a deficient number, since it is larger than the sum of its proper divisors (837223).

43238081 is a wasteful number, since it uses less digits than its factorization.

43238081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 43238081 is about 6575.5669717523. The cubic root of 43238081 is about 350.9851997125.

The spelling of 43238081 in words is "forty-three million, two hundred thirty-eight thousand, eighty-one".