47218432 has 18 divisors (see below), whose sum is σ = 94252928. Its totient is φ = 23609088.

The previous prime is 47218421. The next prime is 47218433. The reversal of 47218432 is 23481274.

It is a junction number, because it is equal to n+sod(n) for n = 47218394 and 47218403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47218433) 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 as a sum of consecutive naturals, namely, 91968 + ... + 92479.

Almost surely, 2^47218432 is an apocalyptic number.

It is an amenable number.

47218432 is a deficient number, since it is larger than the sum of its proper divisors (47034496).

47218432 is an equidigital number, since it uses as much as digits as its factorization.

47218432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184463 (or 184449 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 47218432 is about 6871.5669246541. The cubic root of 47218432 is about 361.4408101859.

The spelling of 47218432 in words is "forty-seven million, two hundred eighteen thousand, four hundred thirty-two".