47847285 has 12 divisors (see below), whose sum is σ = 82935372. Its totient is φ = 25518528.

The previous prime is 47847281. The next prime is 47847307. The reversal of 47847285 is 58274874.

It can be written as a sum of positive squares in 2 ways, for example, as 19873764 + 27973521 = 4458^2 + 5289^2 .

It is not a de Polignac number, because 47847285 - 2² = 47847281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1063273 = 47847285 / (4 + 7 + 8 + 4 + 7 + 2 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 47847285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47847281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 531592 + ... + 531681.

It is an arithmetic number, because the mean of its divisors is an integer number (6911281).

Almost surely, 2^47847285 is an apocalyptic number.

47847285 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47847285 is a deficient number, since it is larger than the sum of its proper divisors (35088087).

47847285 is a wasteful number, since it uses less digits than its factorization.

47847285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063284 (or 1063281 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 47847285 is about 6917.1731943042. The cubic root of 47847285 is about 363.0382902486.

The spelling of 47847285 in words is "forty-seven million, eight hundred forty-seven thousand, two hundred eighty-five".