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29471205980 = 22512711602837
BaseRepresentation
bin11011011100100111…
…101110101001011100
32211001220021101100102
4123130213232221130
5440324112042410
621312222120232
72062216055216
oct333447565134
984056241312
1029471205980
1111553800287
125865a20078
132a1896ac28
1415d81195b6
15b774c42a5
hex6dc9eea5c

29471205980 has 24 divisors (see below), whose sum is σ = 62376857088. Its totient is φ = 11695658688.

The previous prime is 29471205943. The next prime is 29471206003. The reversal of 29471205980 is 8950217492.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 5798879 + ... + 5803958.

It is an arithmetic number, because the mean of its divisors is an integer number (2599035712).

Almost surely, 229471205980 is an apocalyptic number.

29471205980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29471205980 is an abundant number, since it is smaller than the sum of its proper divisors (32905651108).

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

29471205980 is a wasteful number, since it uses less digits than its factorization.

29471205980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11602973 (or 11602971 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 29471205980 in words is "twenty-nine billion, four hundred seventy-one million, two hundred five thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 127 254 508 635 1270 2540 11602837 23205674 46411348 58014185 116028370 232056740 1473560299 2947120598 5894241196 7367801495 14735602990 29471205980