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47272433 = 133636341
BaseRepresentation
bin1011010001010…
…1000111110001
310021221200120212
42310111013301
544100204213
64405113505
71112544335
oct264250761
9107850525
1047272433
112475852a
12139b8895
139a41a70
1463c77c5
15423b9a8
hex2d151f1

47272433 has 4 divisors (see below), whose sum is σ = 50908788. Its totient is φ = 43636080.

The previous prime is 47272417. The next prime is 47272451. The reversal of 47272433 is 33427274.

47272433 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: 33427274 = 216713637.

It can be written as a sum of positive squares in 2 ways, for example, as 11607649 + 35664784 = 3407^2 + 5972^2 .

It is a cyclic number.

It is not a de Polignac number, because 47272433 - 24 = 47272417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47272433.

It is not an unprimeable number, because it can be changed into a prime (47272403) 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, 1818158 + ... + 1818183.

It is an arithmetic number, because the mean of its divisors is an integer number (12727197).

Almost surely, 247272433 is an apocalyptic number.

It is an amenable number.

47272433 is a deficient number, since it is larger than the sum of its proper divisors (3636355).

47272433 is a wasteful number, since it uses less digits than its factorization.

47272433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636354.

The product of its digits is 28224, while the sum is 32.

The square root of 47272433 is about 6875.4951094448. The cubic root of 47272433 is about 361.5785440360.

The spelling of 47272433 in words is "forty-seven million, two hundred seventy-two thousand, four hundred thirty-three".

Divisors: 1 13 3636341 47272433