238487904 has 72 divisors (see below), whose sum is σ = 679704480. Its totient is φ = 79319808.

The previous prime is 238487881. The next prime is 238487923. The reversal of 238487904 is 409784832.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 238487904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229017 + ... + 230055.

It is an arithmetic number, because the mean of its divisors is an integer number (9440340).

Almost surely, 2^238487904 is an apocalyptic number.

238487904 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 238487904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339852240).

238487904 is an abundant number, since it is smaller than the sum of its proper divisors (441216576).

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

238487904 is a wasteful number, since it uses less digits than its factorization.

238487904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 238487904 is about 15443.0535840552. The cubic root of 238487904 is about 620.1386301173.

The spelling of 238487904 in words is "two hundred thirty-eight million, four hundred eighty-seven thousand, nine hundred four".