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15680070912 = 283111856069
BaseRepresentation
bin11101001101001101…
…01110010100000000
31111110202211010121010
432212212232110000
5224103044232122
611111530200520
71063365255312
oct164646562400
944422733533
1015680070912
116716a9a3a0
123057283140
13162b6cb38c
14a8a6917b2
1561b89be0c
hex3a69ae500

15680070912 has 72 divisors (see below), whose sum is σ = 45525684960. Its totient is φ = 4751534080.

The previous prime is 15680070907. The next prime is 15680070919. The reversal of 15680070912 is 21907008651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15680070919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919587 + ... + 936482.

It is an arithmetic number, because the mean of its divisors is an integer number (632301180).

Almost surely, 215680070912 is an apocalyptic number.

15680070912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15680070912 is an abundant number, since it is smaller than the sum of its proper divisors (29845614048).

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

15680070912 is a wasteful number, since it uses less digits than its factorization.

15680070912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856099 (or 1856085 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 15680070912 in words is "fifteen billion, six hundred eighty million, seventy thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 64 66 88 96 128 132 176 192 256 264 352 384 528 704 768 1056 1408 2112 2816 4224 8448 1856069 3712138 5568207 7424276 11136414 14848552 20416759 22272828 29697104 40833518 44545656 59394208 61250277 81667036 89091312 118788416 122500554 163334072 178182624 237576832 245001108 326668144 356365248 475153664 490002216 653336288 712730496 980004432 1306672576 1425460992 1960008864 2613345152 3920017728 5226690304 7840035456 15680070912