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47685980 = 2257930181
BaseRepresentation
bin1011010111101…
…0000101011100
310022201200212102
42311322011130
544201422410
64422024232
71116216116
oct265720534
9108650772
1047685980
1124a10201
1213b78078
139b58074
1464943b6
1542be2a5
hex2d7a15c

47685980 has 24 divisors (see below), whose sum is σ = 101411520. Its totient is φ = 18832320.

The previous prime is 47685961. The next prime is 47686019. The reversal of 47685980 is 8958674.

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, 13511 + ... + 16670.

It is an arithmetic number, because the mean of its divisors is an integer number (4225480).

Almost surely, 247685980 is an apocalyptic number.

It is an amenable number.

47685980 is an abundant number, since it is smaller than the sum of its proper divisors (53725540).

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

47685980 is a wasteful number, since it uses less digits than its factorization.

47685980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30269 (or 30267 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 47685980 is about 6905.5036022002. The cubic root of 47685980 is about 362.6298670640.

The spelling of 47685980 in words is "forty-seven million, six hundred eighty-five thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 79 158 316 395 790 1580 30181 60362 120724 150905 301810 603620 2384299 4768598 9537196 11921495 23842990 47685980