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880827381 = 32721997341
BaseRepresentation
bin110100100000000…
…101101111110101
32021101102200000100
4310200011233311
53300442434011
6223223104313
730553623600
oct6440055765
92241380010
10880827381
11412227715
12206ba2099
13110642a45
1484da9337
15524e0d56
hex34805bf5

880827381 has 18 divisors (see below), whose sum is σ = 1480030422. Its totient is φ = 503329680.

The previous prime is 880827379. The next prime is 880827391. The reversal of 880827381 is 183728088.

It is a happy number.

880827381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 808492356 + 72335025 = 28434^2 + 8505^2 .

It is not a de Polignac number, because 880827381 - 21 = 880827379 is a prime.

It is a super-2 number, since 2×8808273812 = 1551713750238638322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (880827331) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 998230 + ... + 999111.

Almost surely, 2880827381 is an apocalyptic number.

It is an amenable number.

880827381 is a deficient number, since it is larger than the sum of its proper divisors (599203041).

880827381 is a wasteful number, since it uses less digits than its factorization.

880827381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997361 (or 1997351 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 880827381 is about 29678.7361759223. The cubic root of 880827381 is about 958.5842053499.

The spelling of 880827381 in words is "eight hundred eighty million, eight hundred twenty-seven thousand, three hundred eighty-one".

Divisors: 1 3 7 9 21 49 63 147 441 1997341 5992023 13981387 17976069 41944161 97869709 125832483 293609127 880827381