210328635456 has 189 divisors, whose sum is σ = 612256095399. Its totient is φ = 69034549248.

The previous prime is 210328635427. The next prime is 210328635457. The reversal of 210328635456 is 654536823012.

The square root of 210328635456 is 458616.

It is a perfect power (a square), and thus also a powerful number.

210328635456 is a `hidden beast` number, since 2 + 1 + 0 + 3 + 2 + 8 + 635 + 4 + 5 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 65441825856 + 144886809600 = 255816^2 + 380640^2 .

It is not an unprimeable number, because it can be changed into a prime (210328635457) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1067657950 + ... + 1067658146.

Almost surely, 2^210328635456 is an apocalyptic number.

210328635456 is the 458616-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210328635456

210328635456 is an abundant number, since it is smaller than the sum of its proper divisors (401927459943).

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

210328635456 is an frugal number, since it uses more digits than its factorization.

210328635456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 210328635456 in words is "two hundred ten billion, three hundred twenty-eight million, six hundred thirty-five thousand, four hundred fifty-six".