Search a number
-
+
18205082 = 274330241
BaseRepresentation
bin100010101110…
…0100110011010
31021020220200022
41011130212122
514130030312
61450110442
7310512020
oct105344632
937226608
1018205082
11a304825
12611b422
133a0544c
1425bc710
1518e9172
hex115c99a

18205082 has 16 divisors (see below), whose sum is σ = 31935552. Its totient is φ = 7620480.

The previous prime is 18205081. The next prime is 18205141. The reversal of 18205082 is 28050281.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18205081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14519 + ... + 15722.

It is an arithmetic number, because the mean of its divisors is an integer number (1995972).

Almost surely, 218205082 is an apocalyptic number.

18205082 is a deficient number, since it is larger than the sum of its proper divisors (13730470).

18205082 is a wasteful number, since it uses less digits than its factorization.

18205082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30293.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 18205082 is about 4266.7413795542. The cubic root of 18205082 is about 263.0656922167.

The spelling of 18205082 in words is "eighteen million, two hundred five thousand, eighty-two".

Divisors: 1 2 7 14 43 86 301 602 30241 60482 211687 423374 1300363 2600726 9102541 18205082