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20070923712 = 263723168819
BaseRepresentation
bin10010101100010100…
…011111110111000000
31220210202222120021220
4102230110133313000
5312101124024322
613115341315040
71310243015400
oct225424376700
956722876256
1020070923712
11856a571064
123a81865a80
131b7b2aaa28
14d858a8800
157c70ca55c
hex4ac51fdc0

20070923712 has 168 divisors, whose sum is σ = 63768061440. Its totient is φ = 5549483520.

The previous prime is 20070923659. The next prime is 20070923723. The reversal of 20070923712 is 21732907002.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257239 + ... + 326057.

Almost surely, 220070923712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20070923712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31884030720).

20070923712 is an abundant number, since it is smaller than the sum of its proper divisors (43697137728).

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

20070923712 is a wasteful number, since it uses less digits than its factorization.

20070923712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68879 (or 68862 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The spelling of 20070923712 in words is "twenty billion, seventy million, nine hundred twenty-three thousand, seven hundred twelve".