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20707026704 = 2471314221859
BaseRepresentation
bin10011010010001111…
…000010011100010000
31222110002220221112222
4103102033002130100
5314401444323304
613302423240212
71332065552150
oct232217023420
958402827488
1020707026704
118866638711
12401a8a9068
131c50007430
14100616c760
15812d7a4be
hex4d23c2710

20707026704 has 40 divisors (see below), whose sum is σ = 49378297920. Its totient is φ = 8191790208.

The previous prime is 20707026689. The next prime is 20707026713. The reversal of 20707026704 is 40762070702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7109474 + ... + 7112385.

It is an arithmetic number, because the mean of its divisors is an integer number (1234457448).

Almost surely, 220707026704 is an apocalyptic number.

It is an amenable number.

20707026704 is an abundant number, since it is smaller than the sum of its proper divisors (28671271216).

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

20707026704 is a wasteful number, since it uses less digits than its factorization.

20707026704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14221887 (or 14221881 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 35.

The spelling of 20707026704 in words is "twenty billion, seven hundred seven million, twenty-six thousand, seven hundred four".

Divisors: 1 2 4 7 8 13 14 16 26 28 52 56 91 104 112 182 208 364 728 1456 14221859 28443718 56887436 99553013 113774872 184884167 199106026 227549744 369768334 398212052 739536668 796424104 1294189169 1479073336 1592848208 2588378338 2958146672 5176756676 10353513352 20707026704