8447072 has 36 divisors (see below), whose sum is σ = 17419500. Its totient is φ = 4031808.

The previous prime is 8447069. The next prime is 8447081. The reversal of 8447072 is 2707448.

8447072 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16679 + ... + 17177.

It is an arithmetic number, because the mean of its divisors is an integer number (483875).

Almost surely, 2^8447072 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 8447072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8709750).

8447072 is an abundant number, since it is smaller than the sum of its proper divisors (8972428).

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

8447072 is a wasteful number, since it uses less digits than its factorization.

8447072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 8447072 is about 2906.3846958034. The cubic root of 8447072 is about 203.6582770558.

The spelling of 8447072 in words is "eight million, four hundred forty-seven thousand, seventy-two".