47781332 has 12 divisors (see below), whose sum is σ = 83830740. Its totient is φ = 23829696.

The previous prime is 47781329. The next prime is 47781343. The reversal of 47781332 is 23318774.

47781332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27836176 + 19945156 = 5276^2 + 4466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47781292 and 47781301.

It is a congruent number.

It is an unprimeable number.

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, 13457 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (6985895).

Almost surely, 2^47781332 is an apocalyptic number.

It is an amenable number.

47781332 is a deficient number, since it is larger than the sum of its proper divisors (36049408).

47781332 is a wasteful number, since it uses less digits than its factorization.

47781332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30490 (or 30488 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 47781332 is about 6912.4042127179. The cubic root of 47781332 is about 362.8714087905.

The spelling of 47781332 in words is "forty-seven million, seven hundred eighty-one thousand, three hundred thirty-two".