7221682544 has 40 divisors (see below), whose sum is σ = 14512642560. Its totient is φ = 3477141248.

The previous prime is 7221682543. The next prime is 7221682553. The reversal of 7221682544 is 4452861227.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221682543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157394 + ... + 198030.

It is an arithmetic number, because the mean of its divisors is an integer number (362816064).

Almost surely, 2^7221682544 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 7221682544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7256321280).

7221682544 is an abundant number, since it is smaller than the sum of its proper divisors (7290960016).

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

7221682544 is a wasteful number, since it uses less digits than its factorization.

7221682544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41057 (or 41051 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 7221682544 is about 84980.4833123465. The cubic root of 7221682544 is about 1932.9151846635.

The spelling of 7221682544 in words is "seven billion, two hundred twenty-one million, six hundred eighty-two thousand, five hundred forty-four".