63129220 has 48 divisors (see below), whose sum is σ = 165287808. Its totient is φ = 19676160.

The previous prime is 63129197. The next prime is 63129239. The reversal of 63129220 is 2292136.

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 15 ways as a sum of consecutive naturals, for example, 18957 + ... + 22036.

It is an arithmetic number, because the mean of its divisors is an integer number (3443496).

Almost surely, 2^63129220 is an apocalyptic number.

It is an amenable number.

63129220 is an abundant number, since it is smaller than the sum of its proper divisors (102158588).

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

63129220 is a wasteful number, since it uses less digits than its factorization.

63129220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41020 (or 41018 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 63129220 is about 7945.3898582763. The cubic root of 63129220 is about 398.1775846150.

The spelling of 63129220 in words is "sixty-three million, one hundred twenty-nine thousand, two hundred twenty".