43128327 has 16 divisors (see below), whose sum is σ = 63595008. Its totient is φ = 25778880.

The previous prime is 43128301. The next prime is 43128329. The reversal of 43128327 is 72382134.

It is not a de Polignac number, because 43128327 - 2¹² = 43124231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43128294 and 43128303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43128329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6543 + ... + 11360.

It is an arithmetic number, because the mean of its divisors is an integer number (3974688).

Almost surely, 2^43128327 is an apocalyptic number.

43128327 is a deficient number, since it is larger than the sum of its proper divisors (20466681).

43128327 is a wasteful number, since it uses less digits than its factorization.

43128327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17990.

The product of its digits is 8064, while the sum is 30.

The square root of 43128327 is about 6567.2160768472. The cubic root of 43128327 is about 350.6879719827.

The spelling of 43128327 in words is "forty-three million, one hundred twenty-eight thousand, three hundred twenty-seven".