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29939041080 = 23325138971879
BaseRepresentation
bin11011111000100000…
…011000001100111000
32212021111120212110100
4123320200120030320
5442303343303310
621430453315400
72106626436024
oct337040301470
985244525410
1029939041080
1111773898763
125976635b60
132a91870830
1416402db384
15ba35d6ec0
hex6f8818338

29939041080 has 192 divisors, whose sum is σ = 105965496000. Its totient is φ = 7286704128.

The previous prime is 29939041073. The next prime is 29939041091. The reversal of 29939041080 is 8014093992.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 380581 + ... + 452459.

It is an arithmetic number, because the mean of its divisors is an integer number (551903625).

Almost surely, 229939041080 is an apocalyptic number.

29939041080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29939041080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52982748000).

29939041080 is an abundant number, since it is smaller than the sum of its proper divisors (76026454920).

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

29939041080 is a wasteful number, since it uses less digits than its factorization.

29939041080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71998 (or 71991 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 29939041080 in words is "twenty-nine billion, nine hundred thirty-nine million, forty-one thousand, eighty".