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128848944 = 24372316673
BaseRepresentation
bin1111010111000…
…01010000110000
322222110012112010
413223201100300
5230441131234
620441402520
73123124620
oct753412060
9288405463
10128848944
1166806134
1237199440
13209048a3
1413180880
15b4a26e9
hex7ae1430

128848944 has 80 divisors (see below), whose sum is σ = 396974592. Its totient is φ = 35211264.

The previous prime is 128848931. The next prime is 128848961. The reversal of 128848944 is 449848821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 128848893 and 128848902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609 + ... + 16064.

Almost surely, 2128848944 is an apocalyptic number.

128848944 is a gapful number since it is divisible by the number (14) 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 128848944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198487296).

128848944 is an abundant number, since it is smaller than the sum of its proper divisors (268125648).

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

128848944 is a wasteful number, since it uses less digits than its factorization.

128848944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16714 (or 16708 counting only the distinct ones).

The product of its digits is 589824, while the sum is 48.

The square root of 128848944 is about 11351.1648741440. The cubic root of 128848944 is about 505.0801349812.

The spelling of 128848944 in words is "one hundred twenty-eight million, eight hundred forty-eight thousand, nine hundred forty-four".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 23 24 28 42 46 48 56 69 84 92 112 138 161 168 184 276 322 336 368 483 552 644 966 1104 1288 1932 2576 3864 7728 16673 33346 50019 66692 100038 116711 133384 200076 233422 266768 350133 383479 400152 466844 700266 766958 800304 933688 1150437 1400532 1533916 1867376 2300874 2684353 2801064 3067832 4601748 5368706 5602128 6135664 8053059 9203496 10737412 16106118 18406992 21474824 32212236 42949648 64424472 128848944