9780238 has 16 divisors (see below), whose sum is σ = 15855840. Its totient is φ = 4497696.

The previous prime is 9780233. The next prime is 9780241. The reversal of 9780238 is 8320879.

It is a junction number, because it is equal to n+sod(n) for n = 9780197 and 9780206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9631 + ... + 10597.

It is an arithmetic number, because the mean of its divisors is an integer number (990990).

Almost surely, 2^9780238 is an apocalyptic number.

9780238 is a deficient number, since it is larger than the sum of its proper divisors (6075602).

9780238 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (9780237) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1371).

9780238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 9780238 is about 3127.3372059949. The cubic root of 9780238 is about 213.8535551485.

The spelling of 9780238 in words is "nine million, seven hundred eighty thousand, two hundred thirty-eight".