Base | Representation |
---|---|
bin | 1110011010111100110101 |
3 | 21010001202000 |
4 | 32122330311 |
5 | 1431433110 |
6 | 213005513 |
7 | 44063406 |
oct | 16327465 |
9 | 7101660 |
10 | 3780405 |
11 | 2152302 |
12 | 1323899 |
13 | a24935 |
14 | 7059ad |
15 | 4ea1c0 |
hex | 39af35 |
3780405 has 32 divisors (see below), whose sum is σ = 6894720. Its totient is φ = 1964160.
The previous prime is 3780397. The next prime is 3780407. The reversal of 3780405 is 5040873.
It is not a de Polignac number, because 3780405 - 23 = 3780397 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3780407) 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, 5194 + ... + 5876.
It is an arithmetic number, because the mean of its divisors is an integer number (215460).
Almost surely, 23780405 is an apocalyptic number.
3780405 is the 1230-th heptagonal number.
It is an amenable number.
3780405 is a deficient number, since it is larger than the sum of its proper divisors (3114315).
3780405 is a wasteful number, since it uses less digits than its factorization.
3780405 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 738 (or 732 counting only the distinct ones).
The product of its (nonzero) digits is 3360, while the sum is 27.
The square root of 3780405 is about 1944.3263614939. The cubic root of 3780405 is about 155.7803862434.
The spelling of 3780405 in words is "three million, seven hundred eighty thousand, four hundred five".
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