Search a number
-
+
18006053 = 1319269271
BaseRepresentation
bin100010010110…
…0000000100101
31020212210122212
41010230000211
514102143203
61441533205
7306022532
oct104540045
936783585
1018006053
11a18923a
126044205
133965990
142569d89
1518aa1d8
hex112c025

18006053 has 16 divisors (see below), whose sum is σ = 20563200. Its totient is φ = 15629760.

The previous prime is 18006031. The next prime is 18006059. The reversal of 18006053 is 35060081.

It is a cyclic number.

It is not a de Polignac number, because 18006053 - 26 = 18005989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18006059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66308 + ... + 66578.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 218006053 is an apocalyptic number.

18006053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18006053 is a deficient number, since it is larger than the sum of its proper divisors (2557147).

18006053 is a wasteful number, since it uses less digits than its factorization.

18006053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 18006053 is about 4243.3539800493. The cubic root of 18006053 is about 262.1035126983.

The spelling of 18006053 in words is "eighteen million, six thousand, fifty-three".

Divisors: 1 13 19 247 269 271 3497 3523 5111 5149 66443 66937 72899 947687 1385081 18006053