238123886 has 64 divisors (see below), whose sum is σ = 484033536. Its totient is φ = 85551840.

The previous prime is 238123877. The next prime is 238123889. The reversal of 238123886 is 688321832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238123889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241751 + ... + 242733.

It is an arithmetic number, because the mean of its divisors is an integer number (7563024).

Almost surely, 2^238123886 is an apocalyptic number.

238123886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

238123886 is an abundant number, since it is smaller than the sum of its proper divisors (245909650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238123886 is a wasteful number, since it uses less digits than its factorization.

238123886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1016 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 238123886 is about 15431.2632664990. The cubic root of 238123886 is about 619.8229515277.

The spelling of 238123886 in words is "two hundred thirty-eight million, one hundred twenty-three thousand, eight hundred eighty-six".