47453940 has 72 divisors (see below), whose sum is σ = 147315168. Its totient is φ = 12358080.

The previous prime is 47453929. The next prime is 47453969. The reversal of 47453940 is 4935474.

47453940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47453895 and 47453904.

It is a congruent number.

It is an unprimeable number.

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, 4675 + ... + 10805.

It is an arithmetic number, because the mean of its divisors is an integer number (2046044).

Almost surely, 2^47453940 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 47453940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73657584).

47453940 is an abundant number, since it is smaller than the sum of its proper divisors (99861228).

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

47453940 is a wasteful number, since it uses less digits than its factorization.

47453940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189 (or 6184 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 47453940 is about 6888.6820219836. The cubic root of 47453940 is about 362.0407247408.

The spelling of 47453940 in words is "forty-seven million, four hundred fifty-three thousand, nine hundred forty".