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438038808284812 = 227176591891396033
BaseRepresentation
bin110001110011001001101101…
…1100100001100111010001100
32010102222002201200222102002011
41203212103123210030322030
5424403311434410103222
64151344130034311004
7161160155006330440
oct14346233344147214
92112862650872064
10438038808284812
111176332406a0739
1241166a32728464
1315a55b61780197
147a2529746a820
1535995dbe03c77
hex18e64db90ce8c

438038808284812 has 48 divisors (see below), whose sum is σ = 927613665679680. Its totient is φ = 176687528067072.

The previous prime is 438038808284719. The next prime is 438038808284813. The reversal of 438038808284812 is 218482808830834.

It is not an unprimeable number, because it can be changed into a prime (438038808284813) 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, 313075948 + ... + 314471980.

It is an arithmetic number, because the mean of its divisors is an integer number (19325284701660).

Almost surely, 2438038808284812 is an apocalyptic number.

It is an amenable number.

438038808284812 is an abundant number, since it is smaller than the sum of its proper divisors (489574857394868).

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

438038808284812 is a wasteful number, since it uses less digits than its factorization.

438038808284812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055250 (or 2055248 counting only the distinct ones).

The product of its (nonzero) digits is 150994944, while the sum is 67.

The spelling of 438038808284812 in words is "four hundred thirty-eight trillion, thirty-eight billion, eight hundred eight million, two hundred eighty-four thousand, eight hundred twelve".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 659189 1318378 1396033 2636756 2792066 4614323 5584132 9228646 9772231 11206213 18457292 19544462 22412426 23732561 39088924 44824852 47465122 78443491 94930244 156886982 166127927 313773964 332255854 664511708 920249597237 1840499194474 3680998388948 6441747180659 12883494361318 15644243153029 25766988722636 31288486306058 62576972612116 109509702071203 219019404142406 438038808284812