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3072109 = 17231783
BaseRepresentation
bin1011101110000001101101
312210002010211
423232001231
51241301414
6145502421
735053405
oct13560155
95702124
103072109
111809137
121041a11
13837421
1459d805
1540a3c4
hex2ee06d

3072109 has 4 divisors (see below), whose sum is σ = 3075616. Its totient is φ = 3068604.

The previous prime is 3072107. The next prime is 3072119. The reversal of 3072109 is 9012703.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3072109 - 21 = 3072107 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 3072109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3072101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832 + ... + 2614.

It is an arithmetic number, because the mean of its divisors is an integer number (768904).

Almost surely, 23072109 is an apocalyptic number.

It is an amenable number.

3072109 is a deficient number, since it is larger than the sum of its proper divisors (3507).

3072109 is a wasteful number, since it uses less digits than its factorization.

3072109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 3072109 is about 1752.7432784067. The cubic root of 3072109 is about 145.3713667304.

The spelling of 3072109 in words is "three million, seventy-two thousand, one hundred nine".

Divisors: 1 1723 1783 3072109