63641228 has 24 divisors (see below), whose sum is σ = 128524032. Its totient is φ = 27008784.

The previous prime is 63641219. The next prime is 63641267. The reversal of 63641228 is 82214636.

63641228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 63641194 and 63641203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8150 + ... + 13917.

It is an arithmetic number, because the mean of its divisors is an integer number (5355168).

Almost surely, 2^63641228 is an apocalyptic number.

It is an amenable number.

63641228 is an abundant number, since it is smaller than the sum of its proper divisors (64882804).

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

63641228 is a wasteful number, since it uses less digits than its factorization.

63641228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22181 (or 22179 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 63641228 is about 7977.5452364747. The cubic root of 63641228 is about 399.2511572947.

The spelling of 63641228 in words is "sixty-three million, six hundred forty-one thousand, two hundred twenty-eight".