47806 has 16 divisors (see below), whose sum is σ = 81648. Its totient is φ = 20800.

The previous prime is 47797. The next prime is 47807. The reversal of 47806 is 60874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47807) by changing a digit.

47806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 876 + ... + 928.

It is an arithmetic number, because the mean of its divisors is an integer number (5103).

2⁴⁷⁸⁰⁶ is an apocalyptic number.

47806 is a deficient number, since it is larger than the sum of its proper divisors (33842).

47806 is a wasteful number, since it uses less digits than its factorization.

47806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 47806 is about 218.6458323408. The cubic root of 47806 is about 36.2933844415.

It can be divided in two parts, 4780 and 6, that multiplied together give a triangular number (28680 = T₂₃₉).

The spelling of 47806 in words is "forty-seven thousand, eight hundred six".