47213284 has 12 divisors (see below), whose sum is σ = 87483564. Its totient is φ = 22217984.

The previous prime is 47213281. The next prime is 47213291. The reversal of 47213284 is 48231274.

It can be written as a sum of positive squares in 2 ways, for example, as 37478884 + 9734400 = 6122^2 + 3120^2 .

It is not an unprimeable number, because it can be changed into a prime (47213281) 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, 347089 + ... + 347224.

It is an arithmetic number, because the mean of its divisors is an integer number (7290297).

Almost surely, 2^47213284 is an apocalyptic number.

It is an amenable number.

47213284 is a deficient number, since it is larger than the sum of its proper divisors (40270280).

47213284 is a wasteful number, since it uses less digits than its factorization.

47213284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694334 (or 694332 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 47213284 is about 6871.1923273912. The cubic root of 47213284 is about 361.4276743204.

The spelling of 47213284 in words is "forty-seven million, two hundred thirteen thousand, two hundred eighty-four".