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47000073 = 361256831
BaseRepresentation
bin1011001101001…
…0101000001001
310021102211222110
42303102220021
544013000243
64355212533
71110331311
oct263225011
9107384873
1047000073
112459193a
12138a7149
139977ac3
146356441
1541d5e33
hex2cd2a09

47000073 has 8 divisors (see below), whose sum is σ = 63694336. Its totient is φ = 30819600.

The previous prime is 47000059. The next prime is 47000077. The reversal of 47000073 is 37000074.

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

It is not a de Polignac number, because 47000073 - 214 = 46983689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47000077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128233 + ... + 128598.

It is an arithmetic number, because the mean of its divisors is an integer number (7961792).

Almost surely, 247000073 is an apocalyptic number.

It is an amenable number.

47000073 is a deficient number, since it is larger than the sum of its proper divisors (16694263).

47000073 is a wasteful number, since it uses less digits than its factorization.

47000073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256895.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 47000073 is about 6855.6599244712. The cubic root of 47000073 is about 360.8827948537.

Subtracting from 47000073 its reverse (37000074), we obtain a palindrome (9999999).

The spelling of 47000073 in words is "forty-seven million, seventy-three", and thus it is an aban number and an uban number.

Divisors: 1 3 61 183 256831 770493 15666691 47000073