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2804131 = 112271123
BaseRepresentation
bin1010101100100110100011
312021110112201
422230212203
51204213011
6140034031
732556211
oct12544643
95243481
102804131
111645870
12b32917
13772465
1452dcb1
153a5cc1
hex2ac9a3

2804131 has 8 divisors (see below), whose sum is σ = 3075264. Its totient is φ = 2535720.

The previous prime is 2804129. The next prime is 2804141. The reversal of 2804131 is 1314082.

2804131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2804131 - 21 = 2804129 is a prime.

It is a super-2 number, since 2×28041312 = 15726301330322, which contains 22 as substring.

It is a Duffinian number.

2804131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2804099 and 2804108.

It is not an unprimeable number, because it can be changed into a prime (2804111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936 + ... + 3058.

It is an arithmetic number, because the mean of its divisors is an integer number (384408).

22804131 is an apocalyptic number.

2804131 is a deficient number, since it is larger than the sum of its proper divisors (271133).

2804131 is a wasteful number, since it uses less digits than its factorization.

2804131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2804131 is about 1674.5539704650. The cubic root of 2804131 is about 141.0152557978.

The spelling of 2804131 in words is "two million, eight hundred four thousand, one hundred thirty-one".

Divisors: 1 11 227 1123 2497 12353 254921 2804131