238255906 has 16 divisors (see below), whose sum is σ = 412188480. Its totient is φ = 101172240.

The previous prime is 238255889. The next prime is 238255931. The reversal of 238255906 is 609552832.

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, 76540 + ... + 79591.

It is an arithmetic number, because the mean of its divisors is an integer number (25761780).

Almost surely, 2^238255906 is an apocalyptic number.

238255906 is a deficient number, since it is larger than the sum of its proper divisors (173932574).

238255906 is a wasteful number, since it uses less digits than its factorization.

238255906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156249.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 238255906 is about 15435.5403533534. The cubic root of 238255906 is about 619.9374772193.

The spelling of 238255906 in words is "two hundred thirty-eight million, two hundred fifty-five thousand, nine hundred six".