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161360 = 2452017
BaseRepresentation
bin100111011001010000
322012100022
4213121100
520130420
63243012
71241303
oct473120
9265308
10161360
11100261
1279468
13585a4
1442b3a
1532c25
hex27650

161360 has 20 divisors (see below), whose sum is σ = 375348. Its totient is φ = 64512.

The previous prime is 161341. The next prime is 161363. The reversal of 161360 is 63161.

161360 = T84 + T85 + ... + T115.

It can be written as a sum of positive squares in 2 ways, for example, as 99856 + 61504 = 316^2 + 248^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161363) by changing a digit.

161360 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929 + ... + 1088.

2161360 is an apocalyptic number.

161360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161360 is an abundant number, since it is smaller than the sum of its proper divisors (213988).

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

161360 is a wasteful number, since it uses less digits than its factorization.

161360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 161360 is about 401.6964027720. The cubic root of 161360 is about 54.4417355618.

The spelling of 161360 in words is "one hundred sixty-one thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2017 4034 8068 10085 16136 20170 32272 40340 80680 161360