7211982648 has 64 divisors (see below), whose sum is σ = 19524304800. Its totient is φ = 2206794240.

The previous prime is 7211982637. The next prime is 7211982667. The reversal of 7211982648 is 8462891127.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7211982597 and 7211982606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7383 + ... + 120326.

Almost surely, 2^7211982648 is an apocalyptic number.

7211982648 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7211982648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9762152400).

7211982648 is an abundant number, since it is smaller than the sum of its proper divisors (12312322152).

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

7211982648 is a wasteful number, since it uses less digits than its factorization.

7211982648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127912 (or 127908 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 7211982648 is about 84923.3928196466. The cubic root of 7211982648 is about 1932.0493902646.

The spelling of 7211982648 in words is "seven billion, two hundred eleven million, nine hundred eighty-two thousand, six hundred forty-eight".