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13185468 = 22321937521
BaseRepresentation
bin110010010011…
…000110111100
3220210220001200
4302103012330
511333413333
61150335500
7220034412
oct62230674
926726050
1013185468
11749648a
1244ba590
13296876a
141a732b2
151256c13
hexc931bc

13185468 has 72 divisors (see below), whose sum is σ = 36101520. Its totient is φ = 4043520.

The previous prime is 13185461. The next prime is 13185493. The reversal of 13185468 is 86458131.

13185468 is a `hidden beast` number, since 13 + 185 + 468 = 666.

13185468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13185461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25048 + ... + 25568.

It is an arithmetic number, because the mean of its divisors is an integer number (501410).

Almost surely, 213185468 is an apocalyptic number.

13185468 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 13185468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18050760).

13185468 is an abundant number, since it is smaller than the sum of its proper divisors (22916052).

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

13185468 is a wasteful number, since it uses less digits than its factorization.

13185468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 582 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 13185468 is about 3631.1799735072. The cubic root of 13185468 is about 236.2463911433.

It can be divided in two parts, 1318 and 5468, that added together give a triangular number (6786 = T116).

The spelling of 13185468 in words is "thirteen million, one hundred eighty-five thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 19 36 37 38 57 74 76 111 114 148 171 222 228 333 342 444 521 666 684 703 1042 1332 1406 1563 2084 2109 2812 3126 4218 4689 6252 6327 8436 9378 9899 12654 18756 19277 19798 25308 29697 38554 39596 57831 59394 77108 89091 115662 118788 173493 178182 231324 346986 356364 366263 693972 732526 1098789 1465052 2197578 3296367 4395156 6592734 13185468