47812 has 6 divisors (see below), whose sum is σ = 83678. Its totient is φ = 23904.

The previous prime is 47809. The next prime is 47819. The reversal of 47812 is 21874.

47812 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 only one way, i.e., 46656 + 1156 = 216^2 + 34^2 .

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (47819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973 + ... + 5980.

2⁴⁷⁸¹² is an apocalyptic number.

It is an amenable number.

47812 is a deficient number, since it is larger than the sum of its proper divisors (35866).

47812 is a wasteful number, since it uses less digits than its factorization.

47812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957 (or 11955 counting only the distinct ones).

The product of its digits is 448, while the sum is 22.

The square root of 47812 is about 218.6595527298. The cubic root of 47812 is about 36.2949027391.

The spelling of 47812 in words is "forty-seven thousand, eight hundred twelve".