47163420 has 72 divisors (see below), whose sum is σ = 145519920. Its totient is φ = 12360960.

The previous prime is 47163401. The next prime is 47163421. The reversal of 47163420 is 2436174.

47163420 is a `hidden beast` number, since 4 + 7 + 1 + 634 + 20 = 666.

47163420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47163421) 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 23 ways as a sum of consecutive naturals, for example, 8400 + ... + 12840.

It is an arithmetic number, because the mean of its divisors is an integer number (2021110).

Almost surely, 2^47163420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47163420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72759960).

47163420 is an abundant number, since it is smaller than the sum of its proper divisors (98356500).

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

47163420 is a wasteful number, since it uses less digits than its factorization.

47163420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515 (or 4510 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 47163420 is about 6867.5628864977. The cubic root of 47163420 is about 361.3003896776.

Adding to 47163420 its reverse (2436174), we get a palindrome (49599594).

The spelling of 47163420 in words is "forty-seven million, one hundred sixty-three thousand, four hundred twenty".