47387216 has 40 divisors (see below), whose sum is σ = 97702080. Its totient is φ = 22201344.

The previous prime is 47387209. The next prime is 47387227. The reversal of 47387216 is 61278374.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 47387216.

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, 28685 + ... + 30291.

It is an arithmetic number, because the mean of its divisors is an integer number (2442552).

Almost surely, 2^47387216 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 47387216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48851040).

47387216 is an abundant number, since it is smaller than the sum of its proper divisors (50314864).

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

47387216 is a wasteful number, since it uses less digits than its factorization.

47387216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731 (or 1725 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 47387216 is about 6883.8373019705. The cubic root of 47387216 is about 361.8709591653.

The spelling of 47387216 in words is "forty-seven million, three hundred eighty-seven thousand, two hundred sixteen".