Base | Representation |
---|---|
bin | 1011101001001110100 |
3 | 201101101201 |
4 | 1131021310 |
5 | 44202211 |
6 | 12102244 |
7 | 3146260 |
oct | 1351164 |
9 | 641351 |
10 | 381556 |
11 | 24073a |
12 | 164984 |
13 | 104896 |
14 | 9d0a0 |
15 | 780c1 |
hex | 5d274 |
381556 has 12 divisors (see below), whose sum is σ = 763168. Its totient is φ = 163512.
The previous prime is 381541. The next prime is 381559. The reversal of 381556 is 655183.
381556 is an admirable number.
It is a super-2 number, since 2×3815562 = 291169962272, which contains 22 as substring.
It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 13627 = 381556 / (3 + 8 + 1 + 5 + 5 + 6).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (381559) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6786 + ... + 6841.
2381556 is an apocalyptic number.
It is an amenable number.
381556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
381556 is a wasteful number, since it uses less digits than its factorization.
381556 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13638 (or 13636 counting only the distinct ones).
The product of its digits is 3600, while the sum is 28.
The square root of 381556 is about 617.7021936176. The cubic root of 381556 is about 72.5302925334.
The spelling of 381556 in words is "three hundred eighty-one thousand, five hundred fifty-six".
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