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163144 = 2320393
BaseRepresentation
bin100111110101001000
322021210101
4213311020
520210034
63255144
71246432
oct476510
9267711
10163144
11101633
127a4b4
1359347
1443652
1533514
hex27d48

163144 has 8 divisors (see below), whose sum is σ = 305910. Its totient is φ = 81568.

The previous prime is 163129. The next prime is 163147. The reversal of 163144 is 441361.

It is a happy number.

163144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 136900 + 26244 = 370^2 + 162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (163147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10189 + ... + 10204.

2163144 is an apocalyptic number.

It is an amenable number.

163144 is a deficient number, since it is larger than the sum of its proper divisors (142766).

163144 is a wasteful number, since it uses less digits than its factorization.

163144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20399 (or 20395 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 163144 is about 403.9108812597. The cubic root of 163144 is about 54.6416370314.

It can be divided in two parts, 16314 and 4, that multiplied together give a palindrome (65256).

The spelling of 163144 in words is "one hundred sixty-three thousand, one hundred forty-four".

Divisors: 1 2 4 8 20393 40786 81572 163144