238523404 has 48 divisors (see below), whose sum is σ = 491916096. Its totient is φ = 99072000.

The previous prime is 238523387. The next prime is 238523419. The reversal of 238523404 is 404325832.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 198004 + ... + 199204.

It is an arithmetic number, because the mean of its divisors is an integer number (10248252).

Almost surely, 2^238523404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238523404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245958048).

238523404 is an abundant number, since it is smaller than the sum of its proper divisors (253392692).

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

238523404 is a wasteful number, since it uses less digits than its factorization.

238523404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 238523404 is about 15444.2029253698. The cubic root of 238523404 is about 620.1693987346.

The spelling of 238523404 in words is "two hundred thirty-eight million, five hundred twenty-three thousand, four hundred four".