Base | Representation |
---|---|
bin | 11100011111010… |
… | …11010010010000 |
3 | 121122200222022021 |
4 | 32033223102100 |
5 | 442140143410 |
6 | 35414221224 |
7 | 5631246151 |
oct | 1617532220 |
9 | 548628267 |
10 | 238990480 |
11 | 1129a40a3 |
12 | 68054814 |
13 | 3a6894b1 |
14 | 23a51928 |
15 | 15eabeda |
hex | e3eb490 |
238990480 has 40 divisors (see below), whose sum is σ = 560591352. Its totient is φ = 94746624.
The previous prime is 238990463. The next prime is 238990483. The reversal of 238990480 is 84099832.
It is a happy number.
238990480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 7463824 + 231526656 = 2732^2 + 15216^2 .
It is a tau number, because it is divible by the number of its divisors (40).
It is not an unprimeable number, because it can be changed into a prime (238990483) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4179 + ... + 22258.
Almost surely, 2238990480 is an apocalyptic number.
238990480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
238990480 is an abundant number, since it is smaller than the sum of its proper divisors (321600872).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
238990480 is a wasteful number, since it uses less digits than its factorization.
238990480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26563 (or 26557 counting only the distinct ones).
The product of its (nonzero) digits is 124416, while the sum is 43.
The square root of 238990480 is about 15459.3169318699. The cubic root of 238990480 is about 620.5739395722.
The spelling of 238990480 in words is "two hundred thirty-eight million, nine hundred ninety thousand, four hundred eighty".
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