Base | Representation |
---|---|
bin | 10110101010010… |
… | …111011101010001 |
3 | 222111102102001021 |
4 | 112222113131101 |
5 | 1234313024011 |
6 | 101421035441 |
7 | 12264455020 |
oct | 2652273521 |
9 | 874372037 |
10 | 380204881 |
11 | 185685611 |
12 | a73b5b81 |
13 | 60a00504 |
14 | 386d08b7 |
15 | 235a3471 |
hex | 16a97751 |
380204881 has 32 divisors (see below), whose sum is σ = 489328128. Its totient is φ = 287738880.
The previous prime is 380204873. The next prime is 380204899. The reversal of 380204881 is 188402083.
It is a cyclic number.
It is not a de Polignac number, because 380204881 - 23 = 380204873 is a prime.
It is a super-2 number, since 2×3802048812 = 289111503072448322, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (380204821) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143751 + ... + 146371.
It is an arithmetic number, because the mean of its divisors is an integer number (15291504).
Almost surely, 2380204881 is an apocalyptic number.
It is an amenable number.
380204881 is a deficient number, since it is larger than the sum of its proper divisors (109123247).
380204881 is a wasteful number, since it uses less digits than its factorization.
380204881 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2721.
The product of its (nonzero) digits is 12288, while the sum is 34.
The square root of 380204881 is about 19498.8430682438. The cubic root of 380204881 is about 724.4457950909.
The spelling of 380204881 in words is "three hundred eighty million, two hundred four thousand, eight hundred eighty-one".
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