Search a number
-
+
18048023 = 72368327
BaseRepresentation
bin100010011011…
…0010000010111
31020221221020022
41010312100113
514110014043
61442455355
7306256100
oct104662027
936857208
1018048023
11a207824
12606455b
13397bb06
14257b3a7
1518b7868
hex1136417

18048023 has 6 divisors (see below), whose sum is σ = 20994696. Its totient is φ = 15469692.

The previous prime is 18048013. The next prime is 18048029. The reversal of 18048023 is 32084081.

It is not a de Polignac number, because 18048023 - 210 = 18046999 is a prime.

It is a super-2 number, since 2×180480232 = 651462268417058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18047983 and 18048001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18048029) 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 5 ways as a sum of consecutive naturals, for example, 184115 + ... + 184212.

It is an arithmetic number, because the mean of its divisors is an integer number (3499116).

Almost surely, 218048023 is an apocalyptic number.

18048023 is a deficient number, since it is larger than the sum of its proper divisors (2946673).

18048023 is an equidigital number, since it uses as much as digits as its factorization.

18048023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368341 (or 368334 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18048023 is about 4248.2964821208. The cubic root of 18048023 is about 262.3069988729.

The spelling of 18048023 in words is "eighteen million, forty-eight thousand, twenty-three".

Divisors: 1 7 49 368327 2578289 18048023