238361904 has 120 divisors (see below), whose sum is σ = 752965200. Its totient is φ = 69726720.

The previous prime is 238361869. The next prime is 238361911. The reversal of 238361904 is 409163832.

238361904 is a `hidden beast` number, since 2 + 38 + 3 + 619 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 43342 + ... + 48530.

It is an arithmetic number, because the mean of its divisors is an integer number (6274710).

Almost surely, 2^238361904 is an apocalyptic number.

238361904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238361904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376482600).

238361904 is an abundant number, since it is smaller than the sum of its proper divisors (514603296).

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

238361904 is a wasteful number, since it uses less digits than its factorization.

238361904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243 (or 5234 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 238361904 is about 15438.9735410098. The cubic root of 238361904 is about 620.0293985366.

The spelling of 238361904 in words is "two hundred thirty-eight million, three hundred sixty-one thousand, nine hundred four".