4320418 has 4 divisors (see below), whose sum is σ = 6480630. Its totient is φ = 2160208.

The previous prime is 4320383. The next prime is 4320419. The reversal of 4320418 is 8140234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8140234 = 2 ⋅4070117.

It can be written as a sum of positive squares in only one way, i.e., 3932289 + 388129 = 1983^2 + 623^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (4320419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080103 + ... + 1080106.

Almost surely, 2^4320418 is an apocalyptic number.

4320418 is a deficient number, since it is larger than the sum of its proper divisors (2160212).

4320418 is a wasteful number, since it uses less digits than its factorization.

4320418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160211.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4320418 is about 2078.5615218222. The cubic root of 4320418 is about 162.8703097270.

The spelling of 4320418 in words is "four million, three hundred twenty thousand, four hundred eighteen".