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304106881 = 1324143889
BaseRepresentation
bin10010001000000…
…100110110000001
3210012020020012211
4102020010312001
51110322410011
650102022121
710351602661
oct2210046601
9705206184
10304106881
1114672a001
1285a17941
134b008200
142c5621a1
151ba70b21
hex12204d81

304106881 has 12 divisors (see below), whose sum is σ = 337338540. Its totient is φ = 273861120.

The previous prime is 304106867. The next prime is 304106893. The reversal of 304106881 is 188601403.

It can be written as a sum of positive squares in 6 ways, for example, as 46022656 + 258084225 = 6784^2 + 16065^2 .

It is not a de Polignac number, because 304106881 - 219 = 303582593 is a prime.

It is a super-2 number, since 2×3041068812 = 184961990143096322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304103881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15016 + ... + 28873.

It is an arithmetic number, because the mean of its divisors is an integer number (28111545).

Almost surely, 2304106881 is an apocalyptic number.

It is an amenable number.

304106881 is a deficient number, since it is larger than the sum of its proper divisors (33231659).

304106881 is a wasteful number, since it uses less digits than its factorization.

304106881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43956 (or 43943 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 304106881 is about 17438.6605276896. The cubic root of 304106881 is about 672.4738728489.

The spelling of 304106881 in words is "three hundred four million, one hundred six thousand, eight hundred eighty-one".

Divisors: 1 13 41 169 533 6929 43889 570557 1799449 7417241 23392837 304106881