Search a number
-
+
13280748 = 2231385133
BaseRepresentation
bin110010101010…
…010111101100
3220222201202120
4302222113230
511344440443
61152352540
7220612245
oct62522754
926881676
1013280748
117551028
124545750
13299cc40
141a99ccc
151275083
hexcaa5ec

13280748 has 24 divisors (see below), whose sum is σ = 33372528. Its totient is φ = 4086336.

The previous prime is 13280699. The next prime is 13280749. The reversal of 13280748 is 84708231.

It is not an unprimeable number, because it can be changed into a prime (13280749) 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 7 ways as a sum of consecutive naturals, for example, 42411 + ... + 42722.

It is an arithmetic number, because the mean of its divisors is an integer number (1390522).

Almost surely, 213280748 is an apocalyptic number.

It is an amenable number.

13280748 is an abundant number, since it is smaller than the sum of its proper divisors (20091780).

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

13280748 is a wasteful number, since it uses less digits than its factorization.

13280748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85153 (or 85151 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 13280748 is about 3644.2760597957. The cubic root of 13280748 is about 236.8140755497.

Adding to 13280748 its reverse (84708231), we get a palindrome (97988979).

It can be divided in two parts, 132807 and 48, that multiplied together give a palindrome (6374736).

The spelling of 13280748 in words is "thirteen million, two hundred eighty thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 85133 170266 255399 340532 510798 1021596 1106729 2213458 3320187 4426916 6640374 13280748