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12868030 = 257183829
BaseRepresentation
bin110001000101…
…100110111110
3220012202121201
4301011212332
511243234110
61135450114
7214243060
oct61054676
926182551
1012868030
117299a3a
12438693a
132887126
1419cd730
1511e2b3a
hexc459be

12868030 has 16 divisors (see below), whose sum is σ = 26471520. Its totient is φ = 4411872.

The previous prime is 12868027. The next prime is 12868039. The reversal of 12868030 is 3086821.

It is a self number, because there is not a number n which added to its sum of digits gives 12868030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12868039) 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, 91845 + ... + 91984.

It is an arithmetic number, because the mean of its divisors is an integer number (1654470).

Almost surely, 212868030 is an apocalyptic number.

12868030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12868030 is an abundant number, since it is smaller than the sum of its proper divisors (13603490).

12868030 is a wasteful number, since it uses less digits than its factorization.

12868030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183843.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12868030 is about 3587.2036462961. The cubic root of 12868030 is about 234.3351056245.

It can be divided in two parts, 1286 and 8030, that added together give a triangular number (9316 = T136).

The spelling of 12868030 in words is "twelve million, eight hundred sixty-eight thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 183829 367658 919145 1286803 1838290 2573606 6434015 12868030