7221650432 has 44 divisors (see below), whose sum is σ = 14673035196. Its totient is φ = 3551600640.

The previous prime is 7221650419. The next prime is 7221650459. The reversal of 7221650432 is 2340561227.

It can be written as a sum of positive squares in 2 ways, for example, as 3478168576 + 3743481856 = 58976^2 + 61184^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4658 + ... + 120270.

Almost surely, 2^7221650432 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 7221650432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7336517598).

7221650432 is an abundant number, since it is smaller than the sum of its proper divisors (7451384764).

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

7221650432 is a wasteful number, since it uses less digits than its factorization.

7221650432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115694 (or 115676 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 7221650432 is about 84980.2943746372. The cubic root of 7221650432 is about 1932.9123196865.

The spelling of 7221650432 in words is "seven billion, two hundred twenty-one million, six hundred fifty thousand, four hundred thirty-two".