238730490 has 96 divisors (see below), whose sum is σ = 681670080. Its totient is φ = 59906304.

The previous prime is 238730477. The next prime is 238730491. The reversal of 238730490 is 94037832.

It is not an unprimeable number, because it can be changed into a prime (238730491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38421 + ... + 44199.

It is an arithmetic number, because the mean of its divisors is an integer number (7100730).

Almost surely, 2^238730490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238730490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340835040).

238730490 is an abundant number, since it is smaller than the sum of its proper divisors (442939590).

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

238730490 is a wasteful number, since it uses less digits than its factorization.

238730490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5818 (or 5806 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 238730490 is about 15450.9057986903. The cubic root of 238730490 is about 620.3488238262.

The spelling of 238730490 in words is "two hundred thirty-eight million, seven hundred thirty thousand, four hundred ninety".