47781012 has 24 divisors (see below), whose sum is σ = 113061312. Its totient is φ = 15702400.

The previous prime is 47781011. The next prime is 47781047. The reversal of 47781012 is 21018774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47781011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27189 + ... + 28892.

It is an arithmetic number, because the mean of its divisors is an integer number (4710888).

Almost surely, 2^47781012 is an apocalyptic number.

It is an amenable number.

47781012 is an abundant number, since it is smaller than the sum of its proper divisors (65280300).

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

47781012 is a wasteful number, since it uses less digits than its factorization.

47781012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56159 (or 56157 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 47781012 is about 6912.3810658846. The cubic root of 47781012 is about 362.8705987174.

Adding to 47781012 its reverse (21018774), we get a palindrome (68799786).

The spelling of 47781012 in words is "forty-seven million, seven hundred eighty-one thousand, twelve".