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7838510470756 = 227231264512
BaseRepresentation
bin111001000010000101110…
…1000011101011001100100
31000202100120021100022212121
41302010023220131121210
52011411232140031011
624400543442555324
71436212411445200
oct162041350353144
930670507308777
107838510470756
1125523258a1779
12a671a5368b44
1344b225b901b4
141d1558dcdb00
15d8d6e84ae71
hex7210ba1d664

7838510470756 has 81 divisors (see below), whose sum is σ = 16490869511571. Its totient is φ = 3250491174000.

The previous prime is 7838510470753. The next prime is 7838510470789. The reversal of 7838510470756 is 6570740158387.

The square root of 7838510470756 is 2799734.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×78385104707562 (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7838510470694 and 7838510470703.

It is not an unprimeable number, because it can be changed into a prime (7838510470753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1215081331 + ... + 1215087781.

Almost surely, 27838510470756 is an apocalyptic number.

7838510470756 is the 2799734-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7838510470756

7838510470756 is an abundant number, since it is smaller than the sum of its proper divisors (8652359040815).

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

7838510470756 is an frugal number, since it uses more digits than its factorization.

7838510470756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12982 (or 6491 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 61.

The spelling of 7838510470756 in words is "seven trillion, eight hundred thirty-eight billion, five hundred ten million, four hundred seventy thousand, seven hundred fifty-six".

Divisors: 1 2 4 7 14 28 31 49 62 98 124 196 217 434 868 961 1519 1922 3038 3844 6076 6451 6727 12902 13454 25804 26908 45157 47089 90314 94178 180628 188356 199981 316099 399962 632198 799924 1264396 1399867 2799734 5599468 6199411 9799069 12398822 19598138 24797644 39196276 41615401 43395877 83230802 86791754 166461604 173583508 291307807 303771139 582615614 607542278 1165231228 1215084556 1290077431 2039154649 2580154862 4078309298 5160309724 8156618596 9030542017 18061084034 36122168068 39992400361 63213794119 79984800722 126427588238 159969601444 252855176476 279946802527 559893605054 1119787210108 1959627617689 3919255235378 7838510470756