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161268 = 22389151
BaseRepresentation
bin100111010111110100
322012012220
4213113310
520130033
63242340
71241112
oct472764
9265186
10161268
11100188
12793b0
1358533
1442ab2
1532bb3
hex275f4

161268 has 24 divisors (see below), whose sum is σ = 383040. Its totient is φ = 52800.

The previous prime is 161267. The next prime is 161281. The reversal of 161268 is 862161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (15960).

2161268 is an apocalyptic number.

It is an amenable number.

161268 is an abundant number, since it is smaller than the sum of its proper divisors (221772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161268 is a wasteful number, since it uses less digits than its factorization.

161268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 245 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 161268 is about 401.5818721008. The cubic root of 161268 is about 54.4313868759.

The spelling of 161268 in words is "one hundred sixty-one thousand, two hundred sixty-eight".

Divisors: 1 2 3 4 6 12 89 151 178 267 302 356 453 534 604 906 1068 1812 13439 26878 40317 53756 80634 161268