Search a number
-
+
18269080 = 235456727
BaseRepresentation
bin100010110110…
…0001110011000
31021101011110121
41011230032120
514134102310
61451323024
7311166424
oct105541630
937334417
1018269080
11a348915
126150474
133a2860b
1425d7b84
15190d0da
hex116c398

18269080 has 16 divisors (see below), whose sum is σ = 41105520. Its totient is φ = 7307616.

The previous prime is 18269059. The next prime is 18269093. The reversal of 18269080 is 8096281.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 228324 + ... + 228403.

It is an arithmetic number, because the mean of its divisors is an integer number (2569095).

Almost surely, 218269080 is an apocalyptic number.

18269080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18269080 is an abundant number, since it is smaller than the sum of its proper divisors (22836440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18269080 is a wasteful number, since it uses less digits than its factorization.

18269080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456738 (or 456734 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18269080 is about 4274.2344343754. The cubic root of 18269080 is about 263.3735913811.

The spelling of 18269080 in words is "eighteen million, two hundred sixty-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 456727 913454 1826908 2283635 3653816 4567270 9134540 18269080