9818238 has 8 divisors (see below), whose sum is σ = 19636488. Its totient is φ = 3272744.

The previous prime is 9818219. The next prime is 9818251. The reversal of 9818238 is 8328189.

It is a sphenic number, since it is the product of 3 distinct primes.

9818238 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 9818196 and 9818205.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 818181 + ... + 818192.

It is an arithmetic number, because the mean of its divisors is an integer number (2454561).

Almost surely, 2^9818238 is an apocalyptic number.

9818238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9818238 is a wasteful number, since it uses less digits than its factorization.

9818238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636378.

The product of its digits is 27648, while the sum is 39.

The square root of 9818238 is about 3133.4067721890. The cubic root of 9818238 is about 214.1301650830.

It can be divided in two parts, 98 and 18238, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 9818238 in words is "nine million, eight hundred eighteen thousand, two hundred thirty-eight".