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12912068 = 2213248309
BaseRepresentation
bin110001010000…
…010111000100
3220022000000202
4301100113010
511301141233
61140430032
7214515341
oct61202704
926260022
1012912068
11731a034
1243a8318
1328a11a0
141a017c8
151200be8
hexc505c4

12912068 has 12 divisors (see below), whose sum is σ = 24334380. Its totient is φ = 5959392.

The previous prime is 12912043. The next prime is 12912073. The reversal of 12912068 is 86021921.

It can be written as a sum of positive squares in 2 ways, for example, as 2166784 + 10745284 = 1472^2 + 3278^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12912068.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124103 + ... + 124206.

It is an arithmetic number, because the mean of its divisors is an integer number (2027865).

Almost surely, 212912068 is an apocalyptic number.

It is an amenable number.

12912068 is a deficient number, since it is larger than the sum of its proper divisors (11422312).

12912068 is a wasteful number, since it uses less digits than its factorization.

12912068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248326 (or 248324 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 12912068 is about 3593.3366110065. The cubic root of 12912068 is about 234.6021213597.

Adding to 12912068 its reverse (86021921), we get a palindrome (98933989).

The spelling of 12912068 in words is "twelve million, nine hundred twelve thousand, sixty-eight".

Divisors: 1 2 4 13 26 52 248309 496618 993236 3228017 6456034 12912068