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804256893 = 3211172379263
BaseRepresentation
bin101111111011111…
…111110001111101
32002001100111001100
4233323333301331
53121342210033
6211450003313
725634033166
oct5773776175
92061314040
10804256893
11382a89120
121a5416539
13ca81366b
1478b5676d
154a918513
hex2feffc7d

804256893 has 96 divisors (see below), whose sum is σ = 1423319040. Its totient is φ = 431608320.

The previous prime is 804256891. The next prime is 804256933. The reversal of 804256893 is 398652408.

804256893 is a `hidden beast` number, since 80 + 4 + 2 + 568 + 9 + 3 = 666.

It is not a de Polignac number, because 804256893 - 21 = 804256891 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804256891) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3057880 + ... + 3058142.

It is an arithmetic number, because the mean of its divisors is an integer number (14826240).

Almost surely, 2804256893 is an apocalyptic number.

It is an amenable number.

804256893 is a deficient number, since it is larger than the sum of its proper divisors (619062147).

804256893 is a wasteful number, since it uses less digits than its factorization.

804256893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 804256893 is about 28359.4233545042. The cubic root of 804256893 is about 929.9614170604.

The spelling of 804256893 in words is "eight hundred four million, two hundred fifty-six thousand, eight hundred ninety-three".

Divisors: 1 3 9 11 17 23 33 51 69 79 99 153 187 207 237 253 263 391 561 711 759 789 869 1173 1343 1683 1817 2277 2367 2607 2893 3519 4029 4301 4471 5451 6049 7821 8679 12087 12903 13413 14773 16353 18147 19987 20777 26037 30889 38709 40239 44319 49181 54441 59961 62331 66539 92667 102833 132957 147543 179883 186993 199617 228547 278001 308499 339779 353209 442629 477871 598851 685641 925497 1019337 1059627 1131163 1433613 2056923 3058011 3178881 3393489 3885299 4300839 5256581 8123807 10180467 11655897 15769743 24371421 34967691 47309229 73114263 89361877 268085631 804256893