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13028148 = 2233719907
BaseRepresentation
bin110001101100…
…101100110100
3220111220021000
4301230230310
511313400043
61143123300
7215510640
oct61545464
926456230
1013028148
117399271
124443530
132911c83
141a31c20
1512252d3
hexc6cb34

13028148 has 96 divisors (see below), whose sum is σ = 40678400. Its totient is φ = 3522528.

The previous prime is 13028123. The next prime is 13028149. The reversal of 13028148 is 84182031.

13028148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×130281483 (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13028149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13911 + ... + 14817.

Almost surely, 213028148 is an apocalyptic number.

13028148 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 13028148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20339200).

13028148 is an abundant number, since it is smaller than the sum of its proper divisors (27650252).

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

13028148 is a wasteful number, since it uses less digits than its factorization.

13028148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 13028148 is about 3609.4525900751. The cubic root of 13028148 is about 235.3030525087.

The spelling of 13028148 in words is "thirteen million, twenty-eight thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 19 21 27 28 36 38 42 54 57 63 76 84 108 114 126 133 171 189 228 252 266 342 378 399 513 532 684 756 798 907 1026 1197 1596 1814 2052 2394 2721 3591 3628 4788 5442 6349 7182 8163 10884 12698 14364 16326 17233 19047 24489 25396 32652 34466 38094 48978 51699 57141 68932 76188 97956 103398 114282 120631 155097 171423 206796 228564 241262 310194 342846 361893 465291 482524 620388 685692 723786 930582 1085679 1447572 1861164 2171358 3257037 4342716 6514074 13028148