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147849 = 31317223
BaseRepresentation
bin100100000110001001
321111210220
4210012021
514212344
63100253
71154022
oct440611
9244726
10147849
11a1099
1271689
13523b0
143bc49
152dc19
hex24189

147849 has 16 divisors (see below), whose sum is σ = 225792. Its totient is φ = 85248.

The previous prime is 147827. The next prime is 147853. The reversal of 147849 is 948741.

It is a de Polignac number, because none of the positive numbers 2k-147849 is a prime.

It is an Ulam number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147849.

It is not an unprimeable number, because it can be changed into a prime (147859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552 + ... + 774.

It is an arithmetic number, because the mean of its divisors is an integer number (14112).

2147849 is an apocalyptic number.

It is an amenable number.

147849 is a deficient number, since it is larger than the sum of its proper divisors (77943).

147849 is a wasteful number, since it uses less digits than its factorization.

147849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256.

The product of its digits is 8064, while the sum is 33.

The square root of 147849 is about 384.5113782452. The cubic root of 147849 is about 52.8777292937.

The spelling of 147849 in words is "one hundred forty-seven thousand, eight hundred forty-nine".

Divisors: 1 3 13 17 39 51 221 223 663 669 2899 3791 8697 11373 49283 147849