9640238 has 16 divisors (see below), whose sum is σ = 15176160. Its totient is φ = 4586400.

The previous prime is 9640237. The next prime is 9640247. The reversal of 9640238 is 8320469.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640231) 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, 2948 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (948510).

Almost surely, 2^9640238 is an apocalyptic number.

9640238 is a deficient number, since it is larger than the sum of its proper divisors (5535922).

9640238 is a wasteful number, since it uses less digits than its factorization.

9640238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 9640238 is about 3104.8732663347. The cubic root of 9640238 is about 212.8282392047.

The spelling of 9640238 in words is "nine million, six hundred forty thousand, two hundred thirty-eight".