21600000238 has 8 divisors (see below), whose sum is σ = 32647329000. Its totient is φ = 10717557240.

The previous prime is 21600000229. The next prime is 21600000239. The reversal of 21600000238 is 83200000612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21600000239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41221113 + ... + 41221636.

It is an arithmetic number, because the mean of its divisors is an integer number (4080916125).

Almost surely, 2^21600000238 is an apocalyptic number.

21600000238 is a deficient number, since it is larger than the sum of its proper divisors (11047328762).

21600000238 is a wasteful number, since it uses less digits than its factorization.

21600000238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82442882.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 21600000238 in words is "twenty-one billion, six hundred million, two hundred thirty-eight", and thus it is an aban number.