47217012 has 12 divisors (see below), whose sum is σ = 110173056. Its totient is φ = 15739000.

The previous prime is 47216993. The next prime is 47217013. The reversal of 47217012 is 21071274.

47217012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47217013) 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, 1967364 + ... + 1967387.

It is an arithmetic number, because the mean of its divisors is an integer number (9181088).

Almost surely, 2^47217012 is an apocalyptic number.

It is an amenable number.

47217012 is an abundant number, since it is smaller than the sum of its proper divisors (62956044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47217012 is a wasteful number, since it uses less digits than its factorization.

47217012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934758 (or 3934756 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 47217012 is about 6871.4635995543. The cubic root of 47217012 is about 361.4371869461.

Adding to 47217012 its reverse (21071274), we get a palindrome (68288286).

The spelling of 47217012 in words is "forty-seven million, two hundred seventeen thousand, twelve".