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3805141 = 31312157
BaseRepresentation
bin1110100000111111010101
321011022200011
432200333111
51433231031
6213320221
744225464
oct16407725
97138604
103805141
11216994a
121336071
13a32c82
147109db
155026b1
hex3a0fd5

3805141 has 4 divisors (see below), whose sum is σ = 3817612. Its totient is φ = 3792672.

The previous prime is 3805133. The next prime is 3805159. The reversal of 3805141 is 1415083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84100 + 3721041 = 290^2 + 1929^2 .

It is a cyclic number.

It is not a de Polignac number, because 3805141 - 23 = 3805133 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3805121) 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, 5766 + ... + 6391.

It is an arithmetic number, because the mean of its divisors is an integer number (954403).

Almost surely, 23805141 is an apocalyptic number.

It is an amenable number.

3805141 is a deficient number, since it is larger than the sum of its proper divisors (12471).

3805141 is a wasteful number, since it uses less digits than its factorization.

3805141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 3805141 is about 1950.6770619454. The cubic root of 3805141 is about 156.1194160165.

Subtracting from 3805141 its product of nonzero digits (480), we obtain a triangular number (3804661 = T2758).

The spelling of 3805141 in words is "three million, eight hundred five thousand, one hundred forty-one".

Divisors: 1 313 12157 3805141