7213648 has 40 divisors (see below), whose sum is σ = 15276800. Its totient is φ = 3279744.

The previous prime is 7213639. The next prime is 7213667. The reversal of 7213648 is 8463127.

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, 16213 + ... + 16651.

It is an arithmetic number, because the mean of its divisors is an integer number (381920).

Almost surely, 2^7213648 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 7213648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7638400).

7213648 is an abundant number, since it is smaller than the sum of its proper divisors (8063152).

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

7213648 is a wasteful number, since it uses less digits than its factorization.

7213648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 533 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 7213648 is about 2685.8235236143. The cubic root of 7213648 is about 193.2198091616.

The spelling of 7213648 in words is "seven million, two hundred thirteen thousand, six hundred forty-eight".