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7870921341 = 317887173993
BaseRepresentation
bin1110101010010010…
…01011101001111101
3202022112112020021020
413111021023221331
5112104423440331
63341005054353
7366022504353
oct72511135175
922275466236
107870921341
113379a25778
121637b573b9
1398588ab0a
145494a77d3
15310eeec96
hex1d524ba7d

7870921341 has 16 divisors (see below), whose sum is σ = 11124480384. Its totient is φ = 4933021184.

The previous prime is 7870921313. The next prime is 7870921363. The reversal of 7870921341 is 1431290787.

It is a cyclic number.

It is not a de Polignac number, because 7870921341 - 219 = 7870397053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7870921293 and 7870921302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7870921381) 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 15 ways as a sum of consecutive naturals, for example, 41760 + ... + 132233.

It is an arithmetic number, because the mean of its divisors is an integer number (695280024).

Almost surely, 27870921341 is an apocalyptic number.

It is an amenable number.

7870921341 is a deficient number, since it is larger than the sum of its proper divisors (3253559043).

7870921341 is a wasteful number, since it uses less digits than its factorization.

7870921341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174900.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 7870921341 is about 88718.2131301121. The cubic root of 7870921341 is about 1989.1850691305.

The spelling of 7870921341 in words is "seven billion, eight hundred seventy million, nine hundred twenty-one thousand, three hundred forty-one".

Divisors: 1 3 17 51 887 2661 15079 45237 173993 521979 2957881 8873643 154331791 462995373 2623640447 7870921341