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20860485012 = 2234301121383
BaseRepresentation
bin10011011011011000…
…011011110110010100
31222211210200102210000
4103123120123312110
5320210241010022
613325544331300
71335641124363
oct233330336624
958753612700
1020860485012
118935222164
124062173b30
131c75a47473
14101c6b77da
1582158e6ac
hex4db61bd94

20860485012 has 60 divisors (see below), whose sum is σ = 54554090976. Its totient is φ = 6950860560.

The previous prime is 20860485011. The next prime is 20860485047. The reversal of 20860485012 is 21058406802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20860485011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 964873 + ... + 986255.

Almost surely, 220860485012 is an apocalyptic number.

It is an amenable number.

20860485012 is an abundant number, since it is smaller than the sum of its proper divisors (33693605964).

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

20860485012 is a wasteful number, since it uses less digits than its factorization.

20860485012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24410 (or 24399 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 20860485012 in words is "twenty billion, eight hundred sixty million, four hundred eighty-five thousand, twelve".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 3011 6022 9033 12044 18066 21383 27099 36132 42766 54198 64149 81297 85532 108396 128298 162594 192447 243891 256596 325188 384894 487782 577341 769788 975564 1154682 1732023 2309364 3464046 6928092 64384213 128768426 193152639 257536852 386305278 579457917 772610556 1158915834 1738373751 2317831668 3476747502 5215121253 6953495004 10430242506 20860485012