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379808128 = 2772947311
BaseRepresentation
bin10110101000110…
…110100110000000
3222110200020210201
4112220312212000
51234212330003
6101404334544
712261213220
oct2650664600
9873606721
10379808128
11185434517
12a7244454
13608c1a4b
143862a080
1523525b1d
hex16a36980

379808128 has 128 divisors (see below), whose sum is σ = 916531200. Its totient is φ = 153323520.

The previous prime is 379808113. The next prime is 379808129. The reversal of 379808128 is 821808973.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379808129) 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, 1221093 + ... + 1221403.

It is an arithmetic number, because the mean of its divisors is an integer number (7160400).

Almost surely, 2379808128 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 379808128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458265600).

379808128 is an abundant number, since it is smaller than the sum of its proper divisors (536723072).

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

379808128 is a wasteful number, since it uses less digits than its factorization.

379808128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 379808128 is about 19488.6666552640. Note that the first 4 decimals coincide. The cubic root of 379808128 is about 724.1937151435.

The spelling of 379808128 in words is "three hundred seventy-nine million, eight hundred eight thousand, one hundred twenty-eight".

Divisors: 1 2 4 7 8 14 16 28 29 32 47 56 58 64 94 112 116 128 188 203 224 232 311 329 376 406 448 464 622 658 752 812 896 928 1244 1316 1363 1504 1624 1856 2177 2488 2632 2726 3008 3248 3712 4354 4976 5264 5452 6016 6496 8708 9019 9541 9952 10528 10904 12992 14617 17416 18038 19082 19904 21056 21808 25984 29234 34832 36076 38164 39808 42112 43616 58468 63133 69664 72152 76328 87232 102319 116936 126266 139328 144304 152656 174464 204638 233872 252532 278656 288608 305312 409276 423893 467744 505064 577216 610624 818552 847786 935488 1010128 1154432 1221248 1637104 1695572 1870976 2020256 2967251 3274208 3391144 4040512 5934502 6548416 6782288 8081024 11869004 13096832 13564576 23738008 27129152 47476016 54258304 94952032 189904064 379808128