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161046 = 23223389
BaseRepresentation
bin100111010100010110
322011220200
4213110112
520123141
63241330
71240344
oct472426
9264820
10161046
11aaaa6
1279246
13583c2
1442994
1532ab6
hex27516

161046 has 24 divisors (see below), whose sum is σ = 365040. Its totient is φ = 51216.

The previous prime is 161039. The next prime is 161047. The reversal of 161046 is 640161.

161046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220 + ... + 608.

It is an arithmetic number, because the mean of its divisors is an integer number (15210).

2161046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182520).

161046 is an abundant number, since it is smaller than the sum of its proper divisors (203994).

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

161046 is a wasteful number, since it uses less digits than its factorization.

161046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 161046 is about 401.3053700114. The cubic root of 161046 is about 54.4063988292.

Subtracting from 161046 its sum of digits (18), we obtain a triangular number (161028 = T567).

It can be divided in two parts, 16104 and 6, that added together give a triangular number (16110 = T179).

The spelling of 161046 in words is "one hundred sixty-one thousand, forty-six".

Divisors: 1 2 3 6 9 18 23 46 69 138 207 389 414 778 1167 2334 3501 7002 8947 17894 26841 53682 80523 161046