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6130809 = 3475689
BaseRepresentation
bin10111011000110001111001
3102112110220000
4113120301321
53032141214
6335223213
7103053036
oct27306171
912473800
106130809
113508193
122077b09
1313686c9
14b5838d
15811809
hex5d8c79

6130809 has 10 divisors (see below), whose sum is σ = 9158490. Its totient is φ = 4087152.

The previous prime is 6130807. The next prime is 6130819. The reversal of 6130809 is 9080316.

It can be written as a sum of positive squares in only one way, i.e., 6125625 + 5184 = 2475^2 + 72^2 .

It is not a de Polignac number, because 6130809 - 21 = 6130807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6130807) 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 9 ways as a sum of consecutive naturals, for example, 37764 + ... + 37925.

It is an arithmetic number, because the mean of its divisors is an integer number (915849).

Almost surely, 26130809 is an apocalyptic number.

It is an amenable number.

6130809 is a deficient number, since it is larger than the sum of its proper divisors (3027681).

6130809 is an equidigital number, since it uses as much as digits as its factorization.

6130809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75701 (or 75692 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 6130809 is about 2476.0470512492. The cubic root of 6130809 is about 183.0231091483.

It can be divided in two parts, 613080 and 9, that added together give a square (613089 = 7832).

The spelling of 6130809 in words is "six million, one hundred thirty thousand, eight hundred nine".

Divisors: 1 3 9 27 81 75689 227067 681201 2043603 6130809