47284812 has 18 divisors (see below), whose sum is σ = 119525588. Its totient is φ = 15761592.

The previous prime is 47284799. The next prime is 47284813. The reversal of 47284812 is 21848274.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1313467 = 47284812 / (4 + 7 + 2 + 8 + 4 + 8 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (47284813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 656698 + ... + 656769.

Almost surely, 2^47284812 is an apocalyptic number.

It is an amenable number.

47284812 is an abundant number, since it is smaller than the sum of its proper divisors (72240776).

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

47284812 is a wasteful number, since it uses less digits than its factorization.

47284812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313477 (or 1313472 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 47284812 is about 6876.3952765966. The cubic root of 47284812 is about 361.6101028810.

The spelling of 47284812 in words is "forty-seven million, two hundred eighty-four thousand, eight hundred twelve".