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47806680 = 23352691481
BaseRepresentation
bin1011011001011…
…1100011011000
310022221211102210
42312113203120
544214303210
64424355120
71120231035
oct266274330
9108854383
1047806680
1124a92959
1214015aa0
139b9ac9c
1464c638c
1542e4e20
hex2d978d8

47806680 has 64 divisors (see below), whose sum is σ = 144050400. Its totient is φ = 12692480.

The previous prime is 47806667. The next prime is 47806699. The reversal of 47806680 is 8660874.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31540 + ... + 33020.

Almost surely, 247806680 is an apocalyptic number.

47806680 is a gapful number since it is divisible by the number (40) 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 47806680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72025200).

47806680 is an abundant number, since it is smaller than the sum of its proper divisors (96243720).

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

47806680 is a wasteful number, since it uses less digits than its factorization.

47806680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 1760 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 47806680 is about 6914.2374850738. The cubic root of 47806680 is about 362.9355652162.

The spelling of 47806680 in words is "forty-seven million, eight hundred six thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 269 538 807 1076 1345 1481 1614 2152 2690 2962 3228 4035 4443 5380 5924 6456 7405 8070 8886 10760 11848 14810 16140 17772 22215 29620 32280 35544 44430 59240 88860 177720 398389 796778 1195167 1593556 1991945 2390334 3187112 3983890 4780668 5975835 7967780 9561336 11951670 15935560 23903340 47806680