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19941 = 317223
BaseRepresentation
bin100110111100101
31000100120
410313211
51114231
6232153
7112065
oct46745
930316
1019941
1113a89
12b659
1390cc
1473a5
155d96
hex4de5

19941 has 12 divisors (see below), whose sum is σ = 29472. Its totient is φ = 11968.

The previous prime is 19937. The next prime is 19949. The reversal of 19941 is 14991.

19941 = 432 + 442 + ... + 512.

It is not a de Polignac number, because 19941 - 22 = 19937 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19949) 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, 856 + ... + 878.

It is an arithmetic number, because the mean of its divisors is an integer number (2456).

219941 is an apocalyptic number.

It is an amenable number.

19941 is a deficient number, since it is larger than the sum of its proper divisors (9531).

19941 is a wasteful number, since it uses less digits than its factorization.

19941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 43 counting only the distinct ones).

The product of its digits is 324, while the sum is 24.

The square root of 19941 is about 141.2126056696. The cubic root of 19941 is about 27.1174581027.

Subtracting from 19941 its reverse (14991), we obtain a triangular number (4950 = T99).

The spelling of 19941 in words is "nineteen thousand, nine hundred forty-one".

Divisors: 1 3 17 23 51 69 289 391 867 1173 6647 19941