47305287 has 12 divisors (see below), whose sum is σ = 70534464. Its totient is φ = 30519360.

The previous prime is 47305253. The next prime is 47305327. The reversal of 47305287 is 78250374.

47305287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47305287 - 2¹⁰ = 47304263 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47305187) 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 11 ways as a sum of consecutive naturals, for example, 84498 + ... + 85055.

It is an arithmetic number, because the mean of its divisors is an integer number (5877872).

Almost surely, 2^47305287 is an apocalyptic number.

47305287 is a deficient number, since it is larger than the sum of its proper divisors (23229177).

47305287 is a wasteful number, since it uses less digits than its factorization.

47305287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169590 (or 169587 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 47305287 is about 6877.8839042252. The cubic root of 47305287 is about 361.6622894650.

The spelling of 47305287 in words is "forty-seven million, three hundred five thousand, two hundred eighty-seven".