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20276513270 = 2513155973179
BaseRepresentation
bin10010111000100100…
…110000100111110110
31221100002211121010222
4102320210300213312
5313011241411040
613152004014342
71315320343016
oct227044604766
957302747128
1020276513270
118665621592
123b1a6913b2
131bb1a71260
14da4d03c46
157da18abb5
hex4b89309f6

20276513270 has 16 divisors (see below), whose sum is σ = 39305241360. Its totient is φ = 7486712544.

The previous prime is 20276513261. The next prime is 20276513287. The reversal of 20276513270 is 7231567202.

It is a super-2 number, since 2×202765132702 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20276513270.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77986460 + ... + 77986719.

It is an arithmetic number, because the mean of its divisors is an integer number (2456577585).

Almost surely, 220276513270 is an apocalyptic number.

20276513270 is a deficient number, since it is larger than the sum of its proper divisors (19028728090).

20276513270 is a wasteful number, since it uses less digits than its factorization.

20276513270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155973199.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 20276513270 in words is "twenty billion, two hundred seventy-six million, five hundred thirteen thousand, two hundred seventy".

Divisors: 1 2 5 10 13 26 65 130 155973179 311946358 779865895 1559731790 2027651327 4055302654 10138256635 20276513270