47731816 has 32 divisors (see below), whose sum is σ = 100788480. Its totient is φ = 20995200.

The previous prime is 47731811. The next prime is 47731823. The reversal of 47731816 is 61813774.

It is not an unprimeable number, because it can be changed into a prime (47731811) 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, 6021 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (3149640).

Almost surely, 2^47731816 is an apocalyptic number.

It is an amenable number.

47731816 is an abundant number, since it is smaller than the sum of its proper divisors (53056664).

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

47731816 is a wasteful number, since it uses less digits than its factorization.

47731816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17545 (or 17541 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 47731816 is about 6908.8216071918. The cubic root of 47731816 is about 362.7460170650.

The spelling of 47731816 in words is "forty-seven million, seven hundred thirty-one thousand, eight hundred sixteen".