47212180 has 12 divisors (see below), whose sum is σ = 99145620. Its totient is φ = 18884864.

The previous prime is 47212133. The next prime is 47212183. The reversal of 47212180 is 8121274.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10995856 + 36216324 = 3316^2 + 6018^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47212183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180285 + ... + 1180324.

It is an arithmetic number, because the mean of its divisors is an integer number (8262135).

Almost surely, 2^47212180 is an apocalyptic number.

It is an amenable number.

47212180 is an abundant number, since it is smaller than the sum of its proper divisors (51933440).

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

47212180 is a wasteful number, since it uses less digits than its factorization.

47212180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360618 (or 2360616 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 47212180 is about 6871.1119915193. Note that the first 3 decimals coincide. The cubic root of 47212180 is about 361.4248571806.

The spelling of 47212180 in words is "forty-seven million, two hundred twelve thousand, one hundred eighty".