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7992710109 = 324121660461
BaseRepresentation
bin1110111000110011…
…10001001111011101
3202122000200202001100
413130121301033131
5112332113210414
63401035303313
7402031625556
oct73431611735
922560622040
107992710109
11343174944a
1216708aab39
139a4b8cc87
1455b72b32d
1531ba5a609
hex1dc6713dd

7992710109 has 12 divisors (see below), whose sum is σ = 11826612252. Its totient is φ = 5198510400.

The previous prime is 7992710093. The next prime is 7992710177. The reversal of 7992710109 is 9010172997.

It can be written as a sum of positive squares in 2 ways, for example, as 1837836900 + 6154873209 = 42870^2 + 78453^2 .

It is not a de Polignac number, because 7992710109 - 24 = 7992710093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7992710189) 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, 10829862 + ... + 10830599.

It is an arithmetic number, because the mean of its divisors is an integer number (985551021).

Almost surely, 27992710109 is an apocalyptic number.

It is an amenable number.

7992710109 is a deficient number, since it is larger than the sum of its proper divisors (3833902143).

7992710109 is a wasteful number, since it uses less digits than its factorization.

7992710109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21660508 (or 21660505 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 45.

The square root of 7992710109 is about 89401.9580825834. The cubic root of 7992710109 is about 1999.3923244673.

The spelling of 7992710109 in words is "seven billion, nine hundred ninety-two million, seven hundred ten thousand, one hundred nine".

Divisors: 1 3 9 41 123 369 21660461 64981383 194944149 888078901 2664236703 7992710109