7221528395 has 8 divisors (see below), whose sum is σ = 8717726304. Its totient is φ = 5742627904.

The previous prime is 7221528389. The next prime is 7221528397. The reversal of 7221528395 is 5938251227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7221528395 - 2⁶ = 7221528331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221528397) 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, 4323434 + ... + 4325103.

It is an arithmetic number, because the mean of its divisors is an integer number (1089715788).

Almost surely, 2^7221528395 is an apocalyptic number.

7221528395 is a deficient number, since it is larger than the sum of its proper divisors (1496197909).

7221528395 is a wasteful number, since it uses less digits than its factorization.

7221528395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8648709.

The product of its digits is 302400, while the sum is 44.

The square root of 7221528395 is about 84979.5763404361. The cubic root of 7221528395 is about 1932.9014316791.

The spelling of 7221528395 in words is "seven billion, two hundred twenty-one million, five hundred twenty-eight thousand, three hundred ninety-five".