43072857 has 16 divisors (see below), whose sum is σ = 65871360. Its totient is φ = 27788400.

The previous prime is 43072831. The next prime is 43072873. The reversal of 43072857 is 75827034.

43072857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43072857 - 2²³ = 34684249 is a prime.

It is a super-3 number, since 3×43072857³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (43072817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24894 + ... + 26567.

It is an arithmetic number, because the mean of its divisors is an integer number (4116960).

Almost surely, 2^43072857 is an apocalyptic number.

It is an amenable number.

43072857 is a deficient number, since it is larger than the sum of its proper divisors (22798503).

43072857 is a wasteful number, since it uses less digits than its factorization.

43072857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51501 (or 51495 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 43072857 is about 6562.9914673112. The cubic root of 43072857 is about 350.5375603401.

The spelling of 43072857 in words is "forty-three million, seventy-two thousand, eight hundred fifty-seven".