233872138 has 8 divisors (see below), whose sum is σ = 351524160. Its totient is φ = 116697420.

The previous prime is 233872129. The next prime is 233872157. The reversal of 233872138 is 831278332.

233872138 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 233872097 and 233872106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118098 + ... + 120061.

It is an arithmetic number, because the mean of its divisors is an integer number (43940520).

Almost surely, 2^233872138 is an apocalyptic number.

233872138 is a deficient number, since it is larger than the sum of its proper divisors (117652022).

233872138 is a wasteful number, since it uses less digits than its factorization.

233872138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238652.

The product of its digits is 48384, while the sum is 37.

The square root of 233872138 is about 15292.8786694984. The cubic root of 233872138 is about 616.1117555293. Note that the first 3 decimals are identical.

The spelling of 233872138 in words is "two hundred thirty-three million, eight hundred seventy-two thousand, one hundred thirty-eight".