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47608981 = 729234527
BaseRepresentation
bin1011010110011…
…1010010010101
310022120210020121
42311213102111
544141441411
64420231541
71115445460
oct265472225
9108523217
1047608981
1124968372
1213b3b5b1
139b2bcc4
1464742d7
1542a6571
hex2d67495

47608981 has 8 divisors (see below), whose sum is σ = 56286720. Its totient is φ = 39400368.

The previous prime is 47608961. The next prime is 47608997. The reversal of 47608981 is 18980674.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47608981 - 25 = 47608949 is a prime.

It is a super-2 number, since 2×476089812 = 4533230143716722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47608931) 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, 117061 + ... + 117466.

It is an arithmetic number, because the mean of its divisors is an integer number (7035840).

Almost surely, 247608981 is an apocalyptic number.

It is an amenable number.

47608981 is a deficient number, since it is larger than the sum of its proper divisors (8677739).

47608981 is a wasteful number, since it uses less digits than its factorization.

47608981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234563.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 47608981 is about 6899.9261590252. The cubic root of 47608981 is about 362.4345812983.

The spelling of 47608981 in words is "forty-seven million, six hundred eight thousand, nine hundred eighty-one".

Divisors: 1 7 29 203 234527 1641689 6801283 47608981