47431228 has 24 divisors (see below), whose sum is σ = 89577488. Its totient is φ = 21845376.

The previous prime is 47431217. The next prime is 47431247. The reversal of 47431228 is 82213474.

It is a self number, because there is not a number n which added to its sum of digits gives 47431228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45400 + ... + 46432.

Almost surely, 2^47431228 is an apocalyptic number.

It is an amenable number.

47431228 is a deficient number, since it is larger than the sum of its proper divisors (42146260).

47431228 is a wasteful number, since it uses less digits than its factorization.

47431228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933 (or 1931 counting only the distinct ones).

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

The square root of 47431228 is about 6887.0333235726. The cubic root of 47431228 is about 361.9829565758.

The spelling of 47431228 in words is "forty-seven million, four hundred thirty-one thousand, two hundred twenty-eight".