238333890 has 64 divisors (see below), whose sum is σ = 610882560. Its totient is φ = 59377920.

The previous prime is 238333819. The next prime is 238333903. The reversal of 238333890 is 98333832.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22552 + ... + 31388.

It is an arithmetic number, because the mean of its divisors is an integer number (9545040).

Almost surely, 2^238333890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238333890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305441280).

238333890 is an abundant number, since it is smaller than the sum of its proper divisors (372548670).

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

238333890 is a wasteful number, since it uses less digits than its factorization.

238333890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8907.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 238333890 is about 15438.0662649180. The cubic root of 238333890 is about 620.0051074848.

The spelling of 238333890 in words is "two hundred thirty-eight million, three hundred thirty-three thousand, eight hundred ninety".