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20271236306 = 2191583336989
BaseRepresentation
bin10010111000010000…
…101000010011010010
31221022201220111111212
4102320100220103102
5313003414030211
613151254540122
71315224444206
oct227020502322
957281814455
1020271236306
118662647962
123b18967642
131bb09443a9
14da432cb06
157d999738b
hex4b84284d2

20271236306 has 16 divisors (see below), whose sum is σ = 32027529600. Its totient is φ = 9596070288.

The previous prime is 20271236299. The next prime is 20271236317. The reversal of 20271236306 is 60363217202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108341 + ... + 228648.

It is an arithmetic number, because the mean of its divisors is an integer number (2001720600).

Almost surely, 220271236306 is an apocalyptic number.

20271236306 is a deficient number, since it is larger than the sum of its proper divisors (11756293294).

20271236306 is a wasteful number, since it uses less digits than its factorization.

20271236306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338593.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 20271236306 in words is "twenty billion, two hundred seventy-one million, two hundred thirty-six thousand, three hundred six".

Divisors: 1 2 19 38 1583 3166 30077 60154 336989 673978 6402791 12805582 533453587 1066907174 10135618153 20271236306