47297940 has 96 divisors (see below), whose sum is σ = 139345920. Its totient is φ = 11971200.

The previous prime is 47297923. The next prime is 47297953. The reversal of 47297940 is 4979274.

47297940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 47297892 and 47297901.

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 31 ways as a sum of consecutive naturals, for example, 109525 + ... + 109955.

It is an arithmetic number, because the mean of its divisors is an integer number (1451520).

Almost surely, 2^47297940 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 47297940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69672960).

47297940 is an abundant number, since it is smaller than the sum of its proper divisors (92047980).

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

47297940 is a wasteful number, since it uses less digits than its factorization.

47297940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 47297940 is about 6877.3497802569. The cubic root of 47297940 is about 361.6435651984.

The spelling of 47297940 in words is "forty-seven million, two hundred ninety-seven thousand, nine hundred forty".