238447872 has 216 divisors, whose sum is σ = 781216800. Its totient is φ = 69341184.

The previous prime is 238447871. The next prime is 238447883. The reversal of 238447872 is 278744832.

It is a super-2 number, since 2×238447872² = 113714775322656768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238447871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 568879 + ... + 569297.

Almost surely, 2^238447872 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 238447872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390608400).

238447872 is an abundant number, since it is smaller than the sum of its proper divisors (542768928).

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

238447872 is a wasteful number, since it uses less digits than its factorization.

238447872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 456 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 238447872 is about 15441.7574129372. The cubic root of 238447872 is about 620.1039298545.

The spelling of 238447872 in words is "two hundred thirty-eight million, four hundred forty-seven thousand, eight hundred seventy-two".