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20507366634 = 23194110143441
BaseRepresentation
bin10011000110010101…
…011001010011101010
31221221012020011102120
4103012111121103222
5313444341213014
613230532012110
71324122511626
oct230625312352
957835204376
1020507366634
118773968097
123b83a61036
131c1a83ba91
14dc7838186
1580058bba9
hex4c65594ea

20507366634 has 64 divisors (see below), whose sum is σ = 44665326720. Its totient is φ = 6255360000.

The previous prime is 20507366609. The next prime is 20507366669. The reversal of 20507366634 is 43666370502.

It is a super-2 number, since 2×205073666342 (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 450354 + ... + 493794.

It is an arithmetic number, because the mean of its divisors is an integer number (697895730).

Almost surely, 220507366634 is an apocalyptic number.

20507366634 is an abundant number, since it is smaller than the sum of its proper divisors (24157960086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20507366634 is a wasteful number, since it uses less digits than its factorization.

20507366634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43607.

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 20507366634 in words is "twenty billion, five hundred seven million, three hundred sixty-six thousand, six hundred thirty-four".

Divisors: 1 2 3 6 19 38 41 57 82 101 114 123 202 246 303 606 779 1558 1919 2337 3838 4141 4674 5757 8282 11514 12423 24846 43441 78679 86882 130323 157358 236037 260646 472074 825379 1650758 1781081 2476137 3562162 4387541 4952274 5343243 8775082 10686486 13162623 26325246 33840539 67681078 83363279 101521617 166726558 179889181 203043234 250089837 359778362 500179674 539667543 1079335086 3417894439 6835788878 10253683317 20507366634