47191228 has 24 divisors (see below), whose sum is σ = 94567424. Its totient is φ = 20185200.

The previous prime is 47191213. The next prime is 47191237. The reversal of 47191228 is 82219174.

It is a junction number, because it is equal to n+sod(n) for n = 47191193 and 47191202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16333 + ... + 19003.

Almost surely, 2^47191228 is an apocalyptic number.

It is an amenable number.

47191228 is an abundant number, since it is smaller than the sum of its proper divisors (47376196).

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

47191228 is a wasteful number, since it uses less digits than its factorization.

47191228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3311 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 47191228 is about 6869.5871782808. The cubic root of 47191228 is about 361.3713844391.

The spelling of 47191228 in words is "forty-seven million, one hundred ninety-one thousand, two hundred twenty-eight".