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20102208954 = 235971978979
BaseRepresentation
bin10010101110001011…
…110101110110111010
31220212221212000120120
4102232023311312322
5312132131141304
613122420034110
71311102646122
oct225613656672
956787760516
1020102208954
11858619a133
123a90232936
131b849129c9
14d89acdc82
157c9c0a0d9
hex4ae2f5dba

20102208954 has 32 divisors (see below), whose sum is σ = 40943232000. Its totient is φ = 6577919664.

The previous prime is 20102208953. The next prime is 20102208983. The reversal of 20102208954 is 45980220102.

It is not an unprimeable number, because it can be changed into a prime (20102208953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215037 + ... + 294015.

It is an arithmetic number, because the mean of its divisors is an integer number (1279476000).

Almost surely, 220102208954 is an apocalyptic number.

20102208954 is an abundant number, since it is smaller than the sum of its proper divisors (20841023046).

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

20102208954 is a wasteful number, since it uses less digits than its factorization.

20102208954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79762.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 20102208954 in words is "twenty billion, one hundred two million, two hundred eight thousand, nine hundred fifty-four".

Divisors: 1 2 3 6 59 118 177 354 719 1438 2157 4314 42421 78979 84842 127263 157958 236937 254526 473874 4659761 9319522 13979283 27958566 56785901 113571802 170357703 340715406 3350368159 6700736318 10051104477 20102208954