63315240 has 32 divisors (see below), whose sum is σ = 189946080. Its totient is φ = 16884032.

The previous prime is 63315229. The next prime is 63315247. The reversal of 63315240 is 4251336.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 63315240.

It is not an unprimeable number, because it can be changed into a prime (63315247) 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, 263694 + ... + 263933.

It is an arithmetic number, because the mean of its divisors is an integer number (5935815).

Almost surely, 2^63315240 is an apocalyptic number.

63315240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63315240 is an abundant number, since it is smaller than the sum of its proper divisors (126630840).

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

63315240 is a wasteful number, since it uses less digits than its factorization.

63315240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527641 (or 527637 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 63315240 is about 7957.0874068342. The cubic root of 63315240 is about 398.5682983565.

Adding to 63315240 its reverse (4251336), we get a palindrome (67566576).

The spelling of 63315240 in words is "sixty-three million, three hundred fifteen thousand, two hundred forty".