63240320 has 128 divisors (see below), whose sum is σ = 177871680. Its totient is φ = 21196800.

The previous prime is 63240313. The next prime is 63240343. The reversal of 63240320 is 2304236.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 63240292 and 63240301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91175 + ... + 91865.

Almost surely, 2^63240320 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 63240320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88935840).

63240320 is an abundant number, since it is smaller than the sum of its proper divisors (114631360).

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

63240320 is a wasteful number, since it uses less digits than its factorization.

63240320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 63240320 is about 7952.3782606212. The cubic root of 63240320 is about 398.4110296243.

Adding to 63240320 its reverse (2304236), we get a palindrome (65544556).

The spelling of 63240320 in words is "sixty-three million, two hundred forty thousand, three hundred twenty".