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20006620510 = 25171117105359
BaseRepresentation
bin10010101000011111…
…001100110101011110
31220122021222121212211
4102220133030311132
5311433143324020
613105123151034
71305532316452
oct225037146536
956567877784
1020006620510
118537241118
123a6421547a
131b6ab851b6
14d7b12a662
157c162785a
hex4a87ccd5e

20006620510 has 32 divisors (see below), whose sum is σ = 38164763520. Its totient is φ = 7525089792.

The previous prime is 20006620499. The next prime is 20006620531. The reversal of 20006620510 is 1502660002.

It is a congruent number.

It is an unprimeable number.

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, 137211 + ... + 242569.

It is an arithmetic number, because the mean of its divisors is an integer number (1192648860).

Almost surely, 220006620510 is an apocalyptic number.

20006620510 is a deficient number, since it is larger than the sum of its proper divisors (18158143010).

20006620510 is a wasteful number, since it uses less digits than its factorization.

20006620510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106500.

The product of its (nonzero) digits is 720, while the sum is 22.

The spelling of 20006620510 in words is "twenty billion, six million, six hundred twenty thousand, five hundred ten".

Divisors: 1 2 5 10 17 34 85 170 1117 2234 5585 11170 18989 37978 94945 105359 189890 210718 526795 1053590 1791103 3582206 8955515 17911030 117686003 235372006 588430015 1176860030 2000662051 4001324102 10003310255 20006620510