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47530471 = 315472803
BaseRepresentation
bin1011010101010…
…0000111100111
310022102210112211
42311110013213
544131433341
64414424251
71115000542
oct265240747
9108383484
1047530471
112491438a
1213b02087
139b02351
146453859
15428d181
hex2d541e7

47530471 has 8 divisors (see below), whose sum is σ = 49170944. Its totient is φ = 45896760.

The previous prime is 47530463. The next prime is 47530501. The reversal of 47530471 is 17403574.

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

It is a cyclic number.

It is not a de Polignac number, because 47530471 - 23 = 47530463 is a prime.

It is a super-3 number, since 3×475304713 (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47530411) 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, 15556 + ... + 18358.

It is an arithmetic number, because the mean of its divisors is an integer number (6146368).

Almost surely, 247530471 is an apocalyptic number.

47530471 is a deficient number, since it is larger than the sum of its proper divisors (1640473).

47530471 is a wasteful number, since it uses less digits than its factorization.

47530471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 47530471 is about 6894.2346203186. The cubic root of 47530471 is about 362.2352463976.

The spelling of 47530471 in words is "forty-seven million, five hundred thirty thousand, four hundred seventy-one".

Divisors: 1 31 547 2803 16957 86893 1533241 47530471