63216140 has 72 divisors (see below), whose sum is σ = 146648880. Its totient is φ = 22873344.

The previous prime is 63216071. The next prime is 63216151. The reversal of 63216140 is 4161236.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 199262 + ... + 199578.

It is an arithmetic number, because the mean of its divisors is an integer number (2036790).

Almost surely, 2^63216140 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 63216140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73324440).

63216140 is an abundant number, since it is smaller than the sum of its proper divisors (83432740).

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

63216140 is a wasteful number, since it uses less digits than its factorization.

63216140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 63216140 is about 7950.8578153555. The cubic root of 63216140 is about 398.3602455319.

Adding to 63216140 its reverse (4161236), we get a palindrome (67377376).

The spelling of 63216140 in words is "sixty-three million, two hundred sixteen thousand, one hundred forty".