47631812 has 12 divisors (see below), whose sum is σ = 83658540. Its totient is φ = 23729376.

The previous prime is 47631811. The next prime is 47631823. The reversal of 47631812 is 21813674.

It can be written as a sum of positive squares in 2 ways, for example, as 14638276 + 32993536 = 3826^2 + 5744^2 .

It is not an unprimeable number, because it can be changed into a prime (47631811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20387 + ... + 22602.

It is an arithmetic number, because the mean of its divisors is an integer number (6971545).

Almost surely, 2^47631812 is an apocalyptic number.

It is an amenable number.

47631812 is a deficient number, since it is larger than the sum of its proper divisors (36026728).

47631812 is a wasteful number, since it uses less digits than its factorization.

47631812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43270 (or 43268 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 47631812 is about 6901.5803987203. The cubic root of 47631812 is about 362.4925074948.

The spelling of 47631812 in words is "forty-seven million, six hundred thirty-one thousand, eight hundred twelve".