Base | Representation |
---|---|
bin | 11100011111011… |
… | …00001000000000 |
3 | 121122201011000200 |
4 | 32033230020000 |
5 | 442140301140 |
6 | 35414245200 |
7 | 5631262164 |
oct | 1617541000 |
9 | 548634020 |
10 | 238993920 |
11 | 1129a6740 |
12 | 68056800 |
13 | 3a68ac29 |
14 | 23a52ca4 |
15 | 15ead030 |
hex | e3ec200 |
238993920 has 480 divisors, whose sum is σ = 965188224. Its totient is φ = 54067200.
The previous prime is 238993889. The next prime is 238993927. The reversal of 238993920 is 29399832.
It is a tau number, because it is divible by the number of its divisors (480).
It is a Harshad number since it is a multiple of its sum of digits (45).
It is not an unprimeable number, because it can be changed into a prime (238993927) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5829100 + ... + 5829140.
Almost surely, 2238993920 is an apocalyptic number.
238993920 is a gapful number since it is divisible by the number (20) 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 238993920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482594112).
238993920 is an abundant number, since it is smaller than the sum of its proper divisors (726194304).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
238993920 is a wasteful number, since it uses less digits than its factorization.
238993920 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 104 (or 85 counting only the distinct ones).
The product of its (nonzero) digits is 209952, while the sum is 45.
The square root of 238993920 is about 15459.4281912366. The cubic root of 238993920 is about 620.5769170466.
The spelling of 238993920 in words is "two hundred thirty-eight million, nine hundred ninety-three thousand, nine hundred twenty".
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