Search a number
-
+
13280508 = 2232472167
BaseRepresentation
bin110010101010…
…010011111100
3220222201102200
4302222103330
511344434013
61152351500
7220611453
oct62522374
926881380
1013280508
11755092a
124545590
13299cab7
141a99b9a
151274e73
hexcaa4fc

13280508 has 54 divisors (see below), whose sum is σ = 34505016. Its totient is φ = 4306704.

The previous prime is 13280503. The next prime is 13280573. The reversal of 13280508 is 80508231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 79441 + ... + 79607.

Almost surely, 213280508 is an apocalyptic number.

13280508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13280508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17252508).

13280508 is an abundant number, since it is smaller than the sum of its proper divisors (21224508).

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

13280508 is a wasteful number, since it uses less digits than its factorization.

13280508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 13280508 is about 3644.2431312963. The cubic root of 13280508 is about 236.8126490306.

Adding to 13280508 its reverse (80508231), we get a palindrome (93788739).

The spelling of 13280508 in words is "thirteen million, two hundred eighty thousand, five hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 47 94 141 167 188 282 334 423 501 564 668 846 1002 1503 1692 2004 2209 3006 4418 6012 6627 7849 8836 13254 15698 19881 23547 26508 31396 39762 47094 70641 79524 94188 141282 282564 368903 737806 1106709 1475612 2213418 3320127 4426836 6640254 13280508