238921974 has 48 divisors (see below), whose sum is σ = 543396672. Its totient is φ = 78667848.

The previous prime is 238921973. The next prime is 238921997. The reversal of 238921974 is 479129832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238921973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37377 + ... + 43299.

It is an arithmetic number, because the mean of its divisors is an integer number (11320764).

Almost surely, 2^238921974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238921974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271698336).

238921974 is an abundant number, since it is smaller than the sum of its proper divisors (304474698).

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

238921974 is an equidigital number, since it uses as much as digits as its factorization.

238921974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6023 (or 6011 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 238921974 is about 15457.1010865557. The cubic root of 238921974 is about 620.5146386033.

The spelling of 238921974 in words is "two hundred thirty-eight million, nine hundred twenty-one thousand, nine hundred seventy-four".