47418320 has 40 divisors (see below), whose sum is σ = 110574024. Its totient is φ = 18911232.

The previous prime is 47418311. The next prime is 47418323. The reversal of 47418320 is 2381474.

47418320 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 4 ways, for example, as 28686736 + 18731584 = 5356^2 + 4328^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47418323) 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 7 ways as a sum of consecutive naturals, for example, 35912 + ... + 37208.

Almost surely, 2^47418320 is an apocalyptic number.

47418320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47418320 is an abundant number, since it is smaller than the sum of its proper divisors (63155704).

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

47418320 is a wasteful number, since it uses less digits than its factorization.

47418320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1761 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 47418320 is about 6886.0961364187. The cubic root of 47418320 is about 361.9501167491.

Adding to 47418320 its reverse (2381474), we get a palindrome (49799794).

The spelling of 47418320 in words is "forty-seven million, four hundred eighteen thousand, three hundred twenty".