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12916384 = 251361509
BaseRepresentation
bin110001010001…
…011010100000
3220022012221121
4301101122200
511301311014
61140502024
7214534045
oct61213240
926265847
1012916384
1173222a8
1243aa914
1328a3140
141a031cc
151202124
hexc516a0

12916384 has 48 divisors (see below), whose sum is σ = 27888840. Its totient is φ = 5852160.

The previous prime is 12916373. The next prime is 12916417. The reversal of 12916384 is 48361921.

It can be written as a sum of positive squares in 4 ways, for example, as 7290000 + 5626384 = 2700^2 + 2372^2 .

It is a super-3 number, since 3×129163843 (a number of 22 digits) contains 333 as substring.

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, 25122 + ... + 25630.

Almost surely, 212916384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12916384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13944420).

12916384 is an abundant number, since it is smaller than the sum of its proper divisors (14972456).

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

12916384 is a wasteful number, since it uses less digits than its factorization.

12916384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 585 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 12916384 is about 3593.9371168678. The cubic root of 12916384 is about 234.6282578897.

The spelling of 12916384 in words is "twelve million, nine hundred sixteen thousand, three hundred eighty-four".

Divisors: 1 2 4 8 13 16 26 32 52 61 104 122 208 244 416 488 509 793 976 1018 1586 1952 2036 3172 4072 6344 6617 8144 12688 13234 16288 25376 26468 31049 52936 62098 105872 124196 211744 248392 403637 496784 807274 993568 1614548 3229096 6458192 12916384