43423018 has 32 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 19607040.

The previous prime is 43423013. The next prime is 43423019. The reversal of 43423018 is 81032434.

It is a junction number, because it is equal to n+sod(n) for n = 43422983 and 43423001.

It is not an unprimeable number, because it can be changed into a prime (43423013) 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, 72930 + ... + 73522.

It is an arithmetic number, because the mean of its divisors is an integer number (2245320).

Almost surely, 2^43423018 is an apocalyptic number.

43423018 is a deficient number, since it is larger than the sum of its proper divisors (28427222).

43423018 is a wasteful number, since it uses less digits than its factorization.

43423018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 43423018 is about 6589.6144045005. The cubic root of 43423018 is about 351.4848967663.

The spelling of 43423018 in words is "forty-three million, four hundred twenty-three thousand, eighteen".