47722816 has 28 divisors (see below), whose sum is σ = 95582740. Its totient is φ = 23639040.

The previous prime is 47722789. The next prime is 47722823. The reversal of 47722816 is 61822774.

It can be written as a sum of positive squares in 2 ways, for example, as 34762816 + 12960000 = 5896^2 + 3600^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3556 + ... + 10396.

Almost surely, 2^47722816 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 47722816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47791370).

47722816 is an abundant number, since it is smaller than the sum of its proper divisors (47859924).

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

47722816 is a wasteful number, since it uses less digits than its factorization.

47722816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6962 (or 6952 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 47722816 is about 6908.1702353083. The cubic root of 47722816 is about 362.7232166239.

The spelling of 47722816 in words is "forty-seven million, seven hundred twenty-two thousand, eight hundred sixteen".