63273220 has 24 divisors (see below), whose sum is σ = 134054424. Its totient is φ = 25084416.

The previous prime is 63273191. The next prime is 63273229. The reversal of 63273220 is 2237236.

It can be written as a sum of positive squares in 4 ways, for example, as 4260096 + 59013124 = 2064^2 + 7682^2 .

It is not an unprimeable number, because it can be changed into a prime (63273229) 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, 11739 + ... + 16258.

It is an arithmetic number, because the mean of its divisors is an integer number (5585601).

Almost surely, 2^63273220 is an apocalyptic number.

It is an amenable number.

63273220 is an abundant number, since it is smaller than the sum of its proper divisors (70781204).

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

63273220 is a wasteful number, since it uses less digits than its factorization.

63273220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28119 (or 28117 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 63273220 is about 7954.4465552293. The cubic root of 63273220 is about 398.4801071289.

The spelling of 63273220 in words is "sixty-three million, two hundred seventy-three thousand, two hundred twenty".