Base | Representation |
---|---|
bin | 1000001100000001010111 |
3 | 11001001021222 |
4 | 20030001113 |
5 | 1022141031 |
6 | 114000555 |
7 | 24146462 |
oct | 10140127 |
9 | 4031258 |
10 | 2146391 |
11 | 1236685 |
12 | 87615b |
13 | 5a1c70 |
14 | 3dc2d9 |
15 | 2c5e7b |
hex | 20c057 |
2146391 has 8 divisors (see below), whose sum is σ = 2368464. Its totient is φ = 1932480.
The previous prime is 2146387. The next prime is 2146393. The reversal of 2146391 is 1936412.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2146391 - 22 = 2146387 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 2146391.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2146393) 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, 1481 + ... + 2546.
It is an arithmetic number, because the mean of its divisors is an integer number (296058).
22146391 is an apocalyptic number.
2146391 is a deficient number, since it is larger than the sum of its proper divisors (222073).
2146391 is a wasteful number, since it uses less digits than its factorization.
2146391 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4081.
The product of its digits is 1296, while the sum is 26.
The square root of 2146391 is about 1465.0566541946. The cubic root of 2146391 is about 128.9940305312.
The spelling of 2146391 in words is "two million, one hundred forty-six thousand, three hundred ninety-one".
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