63224728 has 16 divisors (see below), whose sum is σ = 135481680. Its totient is φ = 27096288.

The previous prime is 63224713. The next prime is 63224741. The reversal of 63224728 is 82742236.

It is a junction number, because it is equal to n+sod(n) for n = 63224693 and 63224702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564451 + ... + 564562.

It is an arithmetic number, because the mean of its divisors is an integer number (8467605).

Almost surely, 2^63224728 is an apocalyptic number.

It is an amenable number.

63224728 is an abundant number, since it is smaller than the sum of its proper divisors (72256952).

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

63224728 is a wasteful number, since it uses less digits than its factorization.

63224728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129026 (or 1129022 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 63224728 is about 7951.3978645267. The cubic root of 63224728 is about 398.3782839784.

The spelling of 63224728 in words is "sixty-three million, two hundred twenty-four thousand, seven hundred twenty-eight".