238772855 has 4 divisors (see below), whose sum is σ = 286527432. Its totient is φ = 191018280.

The previous prime is 238772813. The next prime is 238772861. The reversal of 238772855 is 558277832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 238772855 - 2¹² = 238768759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23877281 + ... + 23877290.

It is an arithmetic number, because the mean of its divisors is an integer number (71631858).

Almost surely, 2^238772855 is an apocalyptic number.

238772855 is a deficient number, since it is larger than the sum of its proper divisors (47754577).

238772855 is an equidigital number, since it uses as much as digits as its factorization.

238772855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47754576.

The product of its digits is 940800, while the sum is 47.

The square root of 238772855 is about 15452.2766930961. The cubic root of 238772855 is about 620.3855172588.

The spelling of 238772855 in words is "two hundred thirty-eight million, seven hundred seventy-two thousand, eight hundred fifty-five".