47868640 has 24 divisors (see below), whose sum is σ = 113090040. Its totient is φ = 19147392.

The previous prime is 47868629. The next prime is 47868641. The reversal of 47868640 is 4686874.

47868640 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 (47868641) 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 3 ways as a sum of consecutive naturals, for example, 149430 + ... + 149749.

It is an arithmetic number, because the mean of its divisors is an integer number (4712085).

Almost surely, 2^47868640 is an apocalyptic number.

47868640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47868640 is an abundant number, since it is smaller than the sum of its proper divisors (65221400).

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

47868640 is a wasteful number, since it uses less digits than its factorization.

47868640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299194 (or 299186 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 47868640 is about 6918.7166440027. The cubic root of 47868640 is about 363.0922921256.

The spelling of 47868640 in words is "forty-seven million, eight hundred sixty-eight thousand, six hundred forty".