Search a number
-
+
380128032 = 2533597457
BaseRepresentation
bin10110101010000…
…100101100100000
3222111021111122000
4112222010230200
51234303044112
6101415244000
712264014664
oct2652045440
9874244560
10380128032
111856328a9
12a7379600
13609a453b
14386b08a4
152358a7dc
hex16a84b20

380128032 has 96 divisors (see below), whose sum is σ = 1127649600. Its totient is φ = 124545024.

The previous prime is 380128019. The next prime is 380128033. The reversal of 380128032 is 230821083.

380128032 is a `hidden beast` number, since 380 + 1 + 280 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 380127987 and 380128005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380128033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47248 + ... + 54704.

It is an arithmetic number, because the mean of its divisors is an integer number (11746350).

Almost surely, 2380128032 is an apocalyptic number.

380128032 is a gapful number since it is divisible by the number (32) 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 380128032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563824800).

380128032 is an abundant number, since it is smaller than the sum of its proper divisors (747521568).

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

380128032 is a wasteful number, since it uses less digits than its factorization.

380128032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535 (or 7521 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 380128032 is about 19496.8723645615. The cubic root of 380128032 is about 724.3969822104.

The spelling of 380128032 in words is "three hundred eighty million, one hundred twenty-eight thousand, thirty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 59 72 96 108 118 144 177 216 236 288 354 432 472 531 708 864 944 1062 1416 1593 1888 2124 2832 3186 4248 5664 6372 7457 8496 12744 14914 16992 22371 25488 29828 44742 50976 59656 67113 89484 119312 134226 178968 201339 238624 268452 357936 402678 439963 536904 715872 805356 879926 1073808 1319889 1610712 1759852 2147616 2639778 3221424 3519704 3959667 5279556 6442848 7039408 7919334 10559112 11879001 14078816 15838668 21118224 23758002 31677336 42236448 47516004 63354672 95032008 126709344 190064016 380128032