47940820 has 12 divisors (see below), whose sum is σ = 100675764. Its totient is φ = 19176320.

The previous prime is 47940803. The next prime is 47940853. The reversal of 47940820 is 2804974.

It is a happy number.

47940820 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 2 ways, for example, as 11410884 + 36529936 = 3378^2 + 6044^2 .

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 3 ways as a sum of consecutive naturals, for example, 1198501 + ... + 1198540.

It is an arithmetic number, because the mean of its divisors is an integer number (8389647).

Almost surely, 2^47940820 is an apocalyptic number.

It is an amenable number.

47940820 is an abundant number, since it is smaller than the sum of its proper divisors (52734944).

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

47940820 is a wasteful number, since it uses less digits than its factorization.

47940820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397050 (or 2397048 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 47940820 is about 6923.9309644161. The cubic root of 47940820 is about 363.2746999251.

The spelling of 47940820 in words is "forty-seven million, nine hundred forty thousand, eight hundred twenty".