47216620 has 72 divisors (see below), whose sum is σ = 110602800. Its totient is φ = 16917120.

The previous prime is 47216597. The next prime is 47216621. The reversal of 47216620 is 2661274.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47216621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263691 + ... + 263869.

It is an arithmetic number, because the mean of its divisors is an integer number (1536150).

Almost surely, 2^47216620 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 47216620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55301400).

47216620 is an abundant number, since it is smaller than the sum of its proper divisors (63386180).

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

47216620 is a wasteful number, since it uses less digits than its factorization.

47216620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 47216620 is about 6871.4350757320. The cubic root of 47216620 is about 361.4361867151.

Adding to 47216620 its reverse (2661274), we get a palindrome (49877894).

The spelling of 47216620 in words is "forty-seven million, two hundred sixteen thousand, six hundred twenty".