47217216 has 56 divisors (see below), whose sum is σ = 128975104. Its totient is φ = 15229440.

The previous prime is 47217151. The next prime is 47217221. The reversal of 47217216 is 61271274.

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, 1986 + ... + 9918.

Almost surely, 2^47217216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47217216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64487552).

47217216 is an abundant number, since it is smaller than the sum of its proper divisors (81757888).

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

47217216 is a wasteful number, since it uses less digits than its factorization.

47217216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979 (or 7969 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 47217216 is about 6871.4784435375. The cubic root of 47217216 is about 361.4377074724.

The spelling of 47217216 in words is "forty-seven million, two hundred seventeen thousand, two hundred sixteen".