47731764 has 12 divisors (see below), whose sum is σ = 111374144. Its totient is φ = 15910584.

The previous prime is 47731757. The next prime is 47731769. The reversal of 47731764 is 46713774.

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 (47731769) 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 3 ways as a sum of consecutive naturals, for example, 1988812 + ... + 1988835.

Almost surely, 2^47731764 is an apocalyptic number.

It is an amenable number.

47731764 is an abundant number, since it is smaller than the sum of its proper divisors (63642380).

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

47731764 is a wasteful number, since it uses less digits than its factorization.

47731764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977654 (or 3977652 counting only the distinct ones).

The product of its digits is 98784, while the sum is 39.

The square root of 47731764 is about 6908.8178438862. The cubic root of 47731764 is about 362.7458853373.

The spelling of 47731764 in words is "forty-seven million, seven hundred thirty-one thousand, seven hundred sixty-four".