47871620 has 12 divisors (see below), whose sum is σ = 100530444. Its totient is φ = 19148640.

The previous prime is 47871617. The next prime is 47871683. The reversal of 47871620 is 2617874.

It is a happy number.

47871620 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 25725184 + 22146436 = 5072^2 + 4706^2 .

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, 1196771 + ... + 1196810.

It is an arithmetic number, because the mean of its divisors is an integer number (8377537).

Almost surely, 2^47871620 is an apocalyptic number.

It is an amenable number.

47871620 is an abundant number, since it is smaller than the sum of its proper divisors (52658824).

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

47871620 is a wasteful number, since it uses less digits than its factorization.

47871620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393590 (or 2393588 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 47871620 is about 6918.9319985096. The cubic root of 47871620 is about 363.0998265822.

The spelling of 47871620 in words is "forty-seven million, eight hundred seventy-one thousand, six hundred twenty".