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20482713979 = 7213231731093
BaseRepresentation
bin10011000100110111…
…010110100101111011
31221212110211200100021
4103010313112211323
5313422033321404
613224251351311
71323403124200
oct230467264573
957773750307
1020482713979
118760a5a1a2
123b77752537
131c156b9a00
14dc445bca7
157ed31c454
hex4c4dd697b

20482713979 has 72 divisors (see below), whose sum is σ = 27022465152. Its totient is φ = 15454333440.

The previous prime is 20482713967. The next prime is 20482713991. The reversal of 20482713979 is 97931728402.

It is an interprime number because it is at equal distance from previous prime (20482713967) and next prime (20482713991).

It is not a de Polignac number, because 20482713979 - 29 = 20482713467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20482713379) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 18739357 + ... + 18740449.

It is an arithmetic number, because the mean of its divisors is an integer number (375312016).

Almost surely, 220482713979 is an apocalyptic number.

20482713979 is a deficient number, since it is larger than the sum of its proper divisors (6539751173).

20482713979 is a wasteful number, since it uses less digits than its factorization.

20482713979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 20482713979 in words is "twenty billion, four hundred eighty-two million, seven hundred thirteen thousand, nine hundred seventy-nine".

Divisors: 1 7 13 31 49 73 91 169 217 403 511 637 949 1093 1183 1519 2263 2821 3577 5239 6643 7651 8281 12337 14209 15841 19747 29419 33883 36673 46501 53557 79789 86359 99463 110887 184717 205933 237181 256711 382447 440479 558523 604513 696241 1037257 1293019 1441531 1660267 2473459 2677129 3083353 3909661 5726227 7260799 9051133 13484341 17314213 18739903 21583471 32154967 40083589 50825593 94390387 121199491 225084769 280585123 418014571 660732709 1575593383 2926101997 20482713979