238861215 has 24 divisors (see below), whose sum is σ = 414393408. Its totient is φ = 127279680.

The previous prime is 238861199. The next prime is 238861229. The reversal of 238861215 is 512168832.

It is a happy number.

238861215 is a `hidden beast` number, since 2 + 38 + 8 + 612 + 1 + 5 = 666.

It is not a de Polignac number, because 238861215 - 2⁴ = 238861199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238861215.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82777 + ... + 85613.

It is an arithmetic number, because the mean of its divisors is an integer number (17266392).

Almost surely, 2^238861215 is an apocalyptic number.

238861215 is a deficient number, since it is larger than the sum of its proper divisors (175532193).

238861215 is a wasteful number, since it uses less digits than its factorization.

238861215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719 (or 4716 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 238861215 is about 15455.1355542422. The cubic root of 238861215 is about 620.4620341977.

The spelling of 238861215 in words is "two hundred thirty-eight million, eight hundred sixty-one thousand, two hundred fifteen".