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47072303 = 172768959
BaseRepresentation
bin1011001110010…
…0010000101111
310021120112001122
42303210100233
544022303203
64400531155
71111052015
oct263442057
9107515048
1047072303
1124631133
1213920abb
1399a1945
1463748b5
1541ec538
hex2ce442f

47072303 has 4 divisors (see below), whose sum is σ = 49841280. Its totient is φ = 44303328.

The previous prime is 47072299. The next prime is 47072317. The reversal of 47072303 is 30327074.

47072303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30327074 = 215163537.

It is a cyclic number.

It is not a de Polignac number, because 47072303 - 22 = 47072299 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47072323) 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 3 ways as a sum of consecutive naturals, for example, 1384463 + ... + 1384496.

It is an arithmetic number, because the mean of its divisors is an integer number (12460320).

Almost surely, 247072303 is an apocalyptic number.

47072303 is a deficient number, since it is larger than the sum of its proper divisors (2768977).

47072303 is a wasteful number, since it uses less digits than its factorization.

47072303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768976.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 47072303 is about 6860.9258121627. The cubic root of 47072303 is about 361.0675691949.

Adding to 47072303 its reverse (30327074), we get a palindrome (77399377).

The spelling of 47072303 in words is "forty-seven million, seventy-two thousand, three hundred three".

Divisors: 1 17 2768959 47072303