39847228 has 24 divisors (see below), whose sum is σ = 70952112. Its totient is φ = 19578624.

The previous prime is 39847207. The next prime is 39847253. The reversal of 39847228 is 82274893.

It is a happy number.

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, 66900 + ... + 67492.

It is an arithmetic number, because the mean of its divisors is an integer number (2956338).

Almost surely, 2^39847228 is an apocalyptic number.

It is an amenable number.

39847228 is a deficient number, since it is larger than the sum of its proper divisors (31104884).

39847228 is a wasteful number, since it uses less digits than its factorization.

39847228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 859 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 39847228 is about 6312.4660791168. The cubic root of 39847228 is about 341.5592397805.

The spelling of 39847228 in words is "thirty-nine million, eight hundred forty-seven thousand, two hundred twenty-eight".