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12864700 = 22521031249
BaseRepresentation
bin110001000100…
…110010111100
3220012121001101
4301010302330
511243132300
61135422444
7214230262
oct61046274
926177041
1012864700
117297492
124384a24
132885764
1419cc432
1511e1b6a
hexc44cbc

12864700 has 36 divisors (see below), whose sum is σ = 28210000. Its totient is φ = 5091840.

The previous prime is 12864679. The next prime is 12864701. The reversal of 12864700 is 746821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9676 + ... + 10924.

Almost surely, 212864700 is an apocalyptic number.

12864700 is a gapful number since it is divisible by the number (10) 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 12864700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14105000).

12864700 is an abundant number, since it is smaller than the sum of its proper divisors (15345300).

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

12864700 is a wasteful number, since it uses less digits than its factorization.

12864700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 12864700 is about 3586.7394664235. The cubic root of 12864700 is about 234.3148900665.

The spelling of 12864700 in words is "twelve million, eight hundred sixty-four thousand, seven hundred".

Divisors: 1 2 4 5 10 20 25 50 100 103 206 412 515 1030 1249 2060 2498 2575 4996 5150 6245 10300 12490 24980 31225 62450 124900 128647 257294 514588 643235 1286470 2572940 3216175 6432350 12864700