8424018 has 12 divisors (see below), whose sum is σ = 18252078. Its totient is φ = 2808000.

The previous prime is 8423999. The next prime is 8424019. The reversal of 8424018 is 8104248.

It can be written as a sum of positive squares in only one way, i.e., 5489649 + 2934369 = 2343^2 + 1713^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8423982 and 8424000.

It is not an unprimeable number, because it can be changed into a prime (8424019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 233983 + ... + 234018.

Almost surely, 2^8424018 is an apocalyptic number.

8424018 is an abundant number, since it is smaller than the sum of its proper divisors (9828060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8424018 is a wasteful number, since it uses less digits than its factorization.

8424018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468009 (or 468006 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 8424018 is about 2902.4158902542. The cubic root of 8424018 is about 203.4728315043.

The spelling of 8424018 in words is "eight million, four hundred twenty-four thousand, eighteen".