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13129848 = 2332172631
BaseRepresentation
bin110010000101…
…100001111000
3220201001202200
4302011201320
511330123343
61145230200
7216413304
oct62054170
926631680
1013129848
117458716
124492360
132949354
141a5ad04
1512454d3
hexc85878

13129848 has 72 divisors (see below), whose sum is σ = 37834680. Its totient is φ = 4112640.

The previous prime is 13129841. The next prime is 13129861. The reversal of 13129848 is 84892131.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20493 + ... + 21123.

Almost surely, 213129848 is an apocalyptic number.

13129848 is a gapful number since it is divisible by the number (18) 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 13129848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18917340).

13129848 is an abundant number, since it is smaller than the sum of its proper divisors (24704832).

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

13129848 is a wasteful number, since it uses less digits than its factorization.

13129848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 653 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 13129848 is about 3623.5132123396. The cubic root of 13129848 is about 235.9137384634.

The spelling of 13129848 in words is "thirteen million, one hundred twenty-nine thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 17 18 24 34 36 51 68 72 102 136 153 204 289 306 408 578 612 631 867 1156 1224 1262 1734 1893 2312 2524 2601 3468 3786 5048 5202 5679 6936 7572 10404 10727 11358 15144 20808 21454 22716 32181 42908 45432 64362 85816 96543 128724 182359 193086 257448 364718 386172 547077 729436 772344 1094154 1458872 1641231 2188308 3282462 4376616 6564924 13129848