238123456 has 28 divisors (see below), whose sum is σ = 475716600. Its totient is φ = 118257920.

The previous prime is 238123441. The next prime is 238123477. The reversal of 238123456 is 654321832.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2950 + ... + 22021.

Almost surely, 2^238123456 is an apocalyptic number.

It is an amenable number.

238123456 is a deficient number, since it is larger than the sum of its proper divisors (237593144).

238123456 is a wasteful number, since it uses less digits than its factorization.

238123456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25132 (or 25122 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 238123456 is about 15431.2493337383. The cubic root of 238123456 is about 619.8225784389.

The spelling of 238123456 in words is "two hundred thirty-eight million, one hundred twenty-three thousand, four hundred fifty-six".