238681515 has 32 divisors (see below), whose sum is σ = 407116800. Its totient is φ = 119059200.

The previous prime is 238681507. The next prime is 238681517. The reversal of 238681515 is 515186832.

It is not a de Polignac number, because 238681515 - 2³ = 238681507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238681517) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 17215 + ... + 27815.

It is an arithmetic number, because the mean of its divisors is an integer number (12722400).

Almost surely, 2^238681515 is an apocalyptic number.

238681515 is a deficient number, since it is larger than the sum of its proper divisors (168435285).

238681515 is a wasteful number, since it uses less digits than its factorization.

238681515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10707.

The product of its digits is 57600, while the sum is 39.

The square root of 238681515 is about 15449.3208588598. The cubic root of 238681515 is about 620.3063998897.

The spelling of 238681515 in words is "two hundred thirty-eight million, six hundred eighty-one thousand, five hundred fifteen".