63530320 has 80 divisors (see below), whose sum is σ = 172988928. Its totient is φ = 21242880.

The previous prime is 63530293. The next prime is 63530339. The reversal of 63530320 is 2303536.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×63530320² = 8072203118604800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63530291 and 63530300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21577 + ... + 24343.

Almost surely, 2^63530320 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 63530320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86494464).

63530320 is an abundant number, since it is smaller than the sum of its proper divisors (109458608).

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

63530320 is a wasteful number, since it uses less digits than its factorization.

63530320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828 (or 2822 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 63530320 is about 7970.5909442149. The cubic root of 63530320 is about 399.0190965372.

Adding to 63530320 its reverse (2303536), we get a palindrome (65833856).

The spelling of 63530320 in words is "sixty-three million, five hundred thirty thousand, three hundred twenty".