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47005023 = 3131205257
BaseRepresentation
bin1011001101001…
…1110101011111
310021110002202210
42303103311133
544013130043
64355251503
71110351612
oct263236537
9107402683
1047005023
112459562a
12138a9b93
13997a130
146358179
1541d7633
hex2cd3d5f

47005023 has 8 divisors (see below), whose sum is σ = 67494448. Its totient is φ = 28926144.

The previous prime is 47005019. The next prime is 47005033. The reversal of 47005023 is 32050074.

It is a happy number.

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

It is not a de Polignac number, because 47005023 - 22 = 47005019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47005033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602590 + ... + 602667.

It is an arithmetic number, because the mean of its divisors is an integer number (8436806).

Almost surely, 247005023 is an apocalyptic number.

47005023 is a deficient number, since it is larger than the sum of its proper divisors (20489425).

47005023 is a wasteful number, since it uses less digits than its factorization.

47005023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205273.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 47005023 is about 6856.0209305398. The cubic root of 47005023 is about 360.8954636789.

Adding to 47005023 its reverse (32050074), we get a palindrome (79055097).

The spelling of 47005023 in words is "forty-seven million, five thousand, twenty-three".

Divisors: 1 3 13 39 1205257 3615771 15668341 47005023