9728223451 has 8 divisors (see below), whose sum is σ = 10279687680. Its totient is φ = 9187467432.

The previous prime is 9728223433. The next prime is 9728223473. The reversal of 9728223451 is 1543228279.

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 9728223451 - 2¹⁷ = 9728092379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9728223398 and 9728223407.

It is not an unprimeable number, because it can be changed into a prime (9728223431) 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, 2675185 + ... + 2678818.

It is an arithmetic number, because the mean of its divisors is an integer number (1284960960).

Almost surely, 2^9728223451 is an apocalyptic number.

9728223451 is a deficient number, since it is larger than the sum of its proper divisors (551464229).

9728223451 is a wasteful number, since it uses less digits than its factorization.

9728223451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354105.

The product of its digits is 241920, while the sum is 43.

The square root of 9728223451 is about 98631.7568078355. The cubic root of 9728223451 is about 2134.7376636171.

The spelling of 9728223451 in words is "nine billion, seven hundred twenty-eight million, two hundred twenty-three thousand, four hundred fifty-one".