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47947953 = 371922229
BaseRepresentation
bin1011011011101…
…0000010110001
310100020000020010
42312322002301
544233313303
64431405133
71121356644
oct266720261
9110200203
1047947953
112507a009
12140837a9
139c1a391
146521a5b
154321c03
hex2dba0b1

47947953 has 8 divisors (see below), whose sum is σ = 64022400. Its totient is φ = 31919408.

The previous prime is 47947951. The next prime is 47947969. The reversal of 47947953 is 35974974.

It is a happy number.

47947953 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 a cyclic number.

It is not a de Polignac number, because 47947953 - 21 = 47947951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47947951) 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, 8958 + ... + 13271.

It is an arithmetic number, because the mean of its divisors is an integer number (8002800).

Almost surely, 247947953 is an apocalyptic number.

It is an amenable number.

47947953 is a deficient number, since it is larger than the sum of its proper divisors (16074447).

47947953 is a wasteful number, since it uses less digits than its factorization.

47947953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22951.

The product of its digits is 952560, while the sum is 48.

The square root of 47947953 is about 6924.4460428254. The cubic root of 47947953 is about 363.2927159563.

The spelling of 47947953 in words is "forty-seven million, nine hundred forty-seven thousand, nine hundred fifty-three".

Divisors: 1 3 719 2157 22229 66687 15982651 47947953