Search a number
-
+
12814648 = 2371171293
BaseRepresentation
bin110000111000…
…100100111000
3220010001101121
4300320210320
511240032043
61134355024
7213631330
oct60704470
926101347
1012814648
117262920
12435ba74
132868a42
1419b80c0
1511d1ded
hexc38938

12814648 has 64 divisors (see below), whose sum is σ = 30481920. Its totient is φ = 4905600.

The previous prime is 12814631. The next prime is 12814649. The reversal of 12814648 is 84641821.

Its product of digits (12288) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12814649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43590 + ... + 43882.

It is an arithmetic number, because the mean of its divisors is an integer number (476280).

Almost surely, 212814648 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 12814648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15240960).

12814648 is an abundant number, since it is smaller than the sum of its proper divisors (17667272).

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

12814648 is a wasteful number, since it uses less digits than its factorization.

12814648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 384 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 12814648 is about 3579.7552988996. The cubic root of 12814648 is about 234.0106163153.

It can be divided in two parts, 1281 and 4648, that added together give a square (5929 = 772).

The spelling of 12814648 in words is "twelve million, eight hundred fourteen thousand, six hundred forty-eight".

Divisors: 1 2 4 7 8 11 14 22 28 44 56 71 77 88 142 154 284 293 308 497 568 586 616 781 994 1172 1562 1988 2051 2344 3124 3223 3976 4102 5467 6248 6446 8204 10934 12892 16408 20803 21868 22561 25784 41606 43736 45122 83212 90244 145621 166424 180488 228833 291242 457666 582484 915332 1164968 1601831 1830664 3203662 6407324 12814648