47347780 has 12 divisors (see below), whose sum is σ = 99430380. Its totient is φ = 18939104.

The previous prime is 47347739. The next prime is 47347787. The reversal of 47347780 is 8774374.

It can be written as a sum of positive squares in 2 ways, for example, as 26132544 + 21215236 = 5112^2 + 4606^2 .

It is not an unprimeable number, because it can be changed into a prime (47347787) 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, 1183675 + ... + 1183714.

It is an arithmetic number, because the mean of its divisors is an integer number (8285865).

Almost surely, 2^47347780 is an apocalyptic number.

It is an amenable number.

47347780 is an abundant number, since it is smaller than the sum of its proper divisors (52082600).

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

47347780 is a wasteful number, since it uses less digits than its factorization.

47347780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367398 (or 2367396 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 47347780 is about 6880.9723150148. The cubic root of 47347780 is about 361.7705473882.

The spelling of 47347780 in words is "forty-seven million, three hundred forty-seven thousand, seven hundred eighty".