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38028144 = 24371110289
BaseRepresentation
bin1001000100010…
…0001101110000
32122120000210210
42101010031300
534213400034
63435024120
7641143140
oct221041560
978500723
1038028144
111a514120
121089b040
137b5617b
14509c920
1535128e9
hex2444370

38028144 has 80 divisors (see below), whose sum is σ = 122492160. Its totient is φ = 9876480.

The previous prime is 38028143. The next prime is 38028169. The reversal of 38028144 is 44182083.

It is a super-2 number, since 2×380281442 = 2892279472169472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38028143) 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, 1449 + ... + 8840.

It is an arithmetic number, because the mean of its divisors is an integer number (1531152).

Almost surely, 238028144 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 38028144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61246080).

38028144 is an abundant number, since it is smaller than the sum of its proper divisors (84464016).

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

38028144 is a wasteful number, since it uses less digits than its factorization.

38028144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10318 (or 10312 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 38028144 is about 6166.6963602889. The cubic root of 38028144 is about 336.2805197028.

The spelling of 38028144 in words is "thirty-eight million, twenty-eight thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 33 42 44 48 56 66 77 84 88 112 132 154 168 176 231 264 308 336 462 528 616 924 1232 1848 3696 10289 20578 30867 41156 61734 72023 82312 113179 123468 144046 164624 216069 226358 246936 288092 339537 432138 452716 493872 576184 679074 792253 864276 905432 1152368 1358148 1584506 1728552 1810864 2376759 2716296 3169012 3457104 4753518 5432592 6338024 9507036 12676048 19014072 38028144