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47493213 = 329545899
BaseRepresentation
bin1011010100101…
…1000001011101
310022100220102220
42311023001131
544124240323
64413535553
71114454115
oct265130135
9108326386
1047493213
1124899399
1213aa45b9
139abb3c1
146444045
1542820e3
hex2d4b05d

47493213 has 8 divisors (see below), whose sum is σ = 65508000. Its totient is φ = 30570288.

The previous prime is 47493203. The next prime is 47493221. The reversal of 47493213 is 31239474.

47493213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 47493213 - 213 = 47485021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47493203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272863 + ... + 273036.

It is an arithmetic number, because the mean of its divisors is an integer number (8188500).

Almost surely, 247493213 is an apocalyptic number.

It is an amenable number.

47493213 is a deficient number, since it is larger than the sum of its proper divisors (18014787).

47493213 is a wasteful number, since it uses less digits than its factorization.

47493213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545931.

The product of its digits is 18144, while the sum is 33.

The square root of 47493213 is about 6891.5319777245. The cubic root of 47493213 is about 362.1405724723.

The spelling of 47493213 in words is "forty-seven million, four hundred ninety-three thousand, two hundred thirteen".

Divisors: 1 3 29 87 545899 1637697 15831071 47493213