Search a number
-
+
13023312 = 2431811499
BaseRepresentation
bin110001101011…
…100001010000
3220111122121220
4301223201100
511313221222
61143045040
7215460561
oct61534120
926448556
1013023312
117395675
124440780
13290ca03
141a30168
151223b5c
hexc6b850

13023312 has 40 divisors (see below), whose sum is σ = 33852000. Its totient is φ = 4314240.

The previous prime is 13023289. The next prime is 13023383. The reversal of 13023312 is 21332031.

It is a junction number, because it is equal to n+sod(n) for n = 13023291 and 13023300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7939 + ... + 9437.

It is an arithmetic number, because the mean of its divisors is an integer number (846300).

Almost surely, 213023312 is an apocalyptic number.

13023312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13023312 is an abundant number, since it is smaller than the sum of its proper divisors (20828688).

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

13023312 is a wasteful number, since it uses less digits than its factorization.

13023312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13023312 is about 3608.7826202197. The cubic root of 13023312 is about 235.2739343668.

Adding to 13023312 its reverse (21332031), we get a palindrome (34355343).

The spelling of 13023312 in words is "thirteen million, twenty-three thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 48 181 362 543 724 1086 1448 1499 2172 2896 2998 4344 4497 5996 8688 8994 11992 17988 23984 35976 71952 271319 542638 813957 1085276 1627914 2170552 3255828 4341104 6511656 13023312