Base | Representation |
---|---|
bin | 1011010111101000011101 |
3 | 12121102022111 |
4 | 23113220131 |
5 | 1230333011 |
6 | 143514021 |
7 | 34222105 |
oct | 13275035 |
9 | 5542274 |
10 | 2980381 |
11 | 1756228 |
12 | bb8911 |
13 | 804751 |
14 | 578205 |
15 | 3dd121 |
hex | 2d7a1d |
2980381 has 4 divisors (see below), whose sum is σ = 3003264. Its totient is φ = 2957500.
The previous prime is 2980357. The next prime is 2980391. The reversal of 2980381 is 1830892.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 2980381 - 221 = 883229 is a prime.
It is a super-2 number, since 2×29803812 = 17765341810322, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2980391) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11245 + ... + 11506.
It is an arithmetic number, because the mean of its divisors is an integer number (750816).
22980381 is an apocalyptic number.
It is an amenable number.
2980381 is a deficient number, since it is larger than the sum of its proper divisors (22883).
2980381 is a wasteful number, since it uses less digits than its factorization.
2980381 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 22882.
The product of its (nonzero) digits is 3456, while the sum is 31.
The square root of 2980381 is about 1726.3780003232. The cubic root of 2980381 is about 143.9098748037.
The spelling of 2980381 in words is "two million, nine hundred eighty thousand, three hundred eighty-one".
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