47781100 has 18 divisors (see below), whose sum is σ = 103685204. Its totient is φ = 19112400.

The previous prime is 47781089. The next prime is 47781103. The reversal of 47781100 is 118774.

47781100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (47781103) 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 5 ways as a sum of consecutive naturals, for example, 238806 + ... + 239005.

Almost surely, 2^47781100 is an apocalyptic number.

It is an amenable number.

47781100 is an abundant number, since it is smaller than the sum of its proper divisors (55904104).

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

47781100 is a wasteful number, since it uses less digits than its factorization.

47781100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477825 (or 477818 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 47781100 is about 6912.3874312715. The cubic root of 47781100 is about 362.8708214879.

Adding to 47781100 its reverse (118774), we get a palindrome (47899874).

The spelling of 47781100 in words is "forty-seven million, seven hundred eighty-one thousand, one hundred".