63218442 has 16 divisors (see below), whose sum is σ = 144499392. Its totient is φ = 18062400.

The previous prime is 63218411. The next prime is 63218447. The reversal of 63218442 is 24481236.

It is not an unprimeable number, because it can be changed into a prime (63218447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 752559 + ... + 752642.

It is an arithmetic number, because the mean of its divisors is an integer number (9031212).

Almost surely, 2^63218442 is an apocalyptic number.

63218442 is an abundant number, since it is smaller than the sum of its proper divisors (81280950).

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

63218442 is a wasteful number, since it uses less digits than its factorization.

63218442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505213.

The product of its digits is 9216, while the sum is 30.

The square root of 63218442 is about 7951.0025782916. The cubic root of 63218442 is about 398.3650808696.

Adding to 63218442 its reverse (24481236), we get a palindrome (87699678).

The spelling of 63218442 in words is "sixty-three million, two hundred eighteen thousand, four hundred forty-two".