Search a number
-
+
18992 = 241187
BaseRepresentation
bin100101000110000
3222001102
410220300
51101432
6223532
7106241
oct45060
928042
1018992
11132a6
12aba8
13884c
146cc8
155962
hex4a30

18992 has 10 divisors (see below), whose sum is σ = 36828. Its totient is φ = 9488.

The previous prime is 18979. The next prime is 19001. The reversal of 18992 is 29981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578 + ... + 609.

218992 is an apocalyptic number.

It is an amenable number.

18992 is a deficient number, since it is larger than the sum of its proper divisors (17836).

18992 is a wasteful number, since it uses less digits than its factorization.

18992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 1189 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 18992 is about 137.8114654156. The cubic root of 18992 is about 26.6802708363.

The spelling of 18992 in words is "eighteen thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 16 1187 2374 4748 9496 18992