238640212 has 24 divisors (see below), whose sum is σ = 424279296. Its totient is φ = 117425088.

The previous prime is 238640173. The next prime is 238640221. The reversal of 238640212 is 212046832.

238640212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251523 + ... + 252469.

It is an arithmetic number, because the mean of its divisors is an integer number (17678304).

Almost surely, 2^238640212 is an apocalyptic number.

It is an amenable number.

238640212 is a deficient number, since it is larger than the sum of its proper divisors (185639084).

238640212 is a wasteful number, since it uses less digits than its factorization.

238640212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 238640212 is about 15447.9840756003. The cubic root of 238640212 is about 620.2706172091.

The spelling of 238640212 in words is "two hundred thirty-eight million, six hundred forty thousand, two hundred twelve".