47217288 has 16 divisors (see below), whose sum is σ = 118043280. Its totient is φ = 15739088.

The previous prime is 47217271. The next prime is 47217293. The reversal of 47217288 is 88271274.

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 3 ways as a sum of consecutive naturals, for example, 983670 + ... + 983717.

It is an arithmetic number, because the mean of its divisors is an integer number (7377705).

Almost surely, 2^47217288 is an apocalyptic number.

It is an amenable number.

47217288 is an abundant number, since it is smaller than the sum of its proper divisors (70825992).

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

47217288 is a wasteful number, since it uses less digits than its factorization.

47217288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967396 (or 1967392 counting only the distinct ones).

The product of its digits is 50176, while the sum is 39.

The square root of 47217288 is about 6871.4836825827. The cubic root of 47217288 is about 361.4378911872.

The spelling of 47217288 in words is "forty-seven million, two hundred seventeen thousand, two hundred eighty-eight".