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47405005 = 576912329
BaseRepresentation
bin1011010011010…
…1011111001101
310022012102102221
42310311133031
544113430010
64412015341
71113636004
oct264653715
9108172387
1047405005
112483909a
1213a61551
139a8a1cb
14641dc3b
154265dda
hex2d357cd

47405005 has 8 divisors (see below), whose sum is σ = 56964600. Its totient is φ = 37871616.

The previous prime is 47405003. The next prime is 47405009. The reversal of 47405005 is 50050474.

It can be written as a sum of positive squares in 4 ways, for example, as 537289 + 46867716 = 733^2 + 6846^2 .

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 47405005 - 21 = 47405003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47405003) 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, 2320 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (7120575).

Almost surely, 247405005 is an apocalyptic number.

It is an amenable number.

47405005 is a deficient number, since it is larger than the sum of its proper divisors (9559595).

47405005 is a wasteful number, since it uses less digits than its factorization.

47405005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13103.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 47405005 is about 6885.1292653080. The cubic root of 47405005 is about 361.9162352101.

Adding to 47405005 its reverse (50050474), we get a palindrome (97455479).

The spelling of 47405005 in words is "forty-seven million, four hundred five thousand, five".

Divisors: 1 5 769 3845 12329 61645 9481001 47405005