63247728 has 40 divisors (see below), whose sum is σ = 166076176. Its totient is φ = 20736000.

The previous prime is 63247727. The next prime is 63247729. The reversal of 63247728 is 82774236.

It is an interprime number because it is at equal distance from previous prime (63247727) and next prime (63247729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63247721) 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, 7873 + ... + 13728.

Almost surely, 2^63247728 is an apocalyptic number.

It is an amenable number.

63247728 is an abundant number, since it is smaller than the sum of its proper divisors (102828448).

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

63247728 is a wasteful number, since it uses less digits than its factorization.

63247728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21673 (or 21667 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 63247728 is about 7952.8440195945. The cubic root of 63247728 is about 398.4265857003.

The spelling of 63247728 in words is "sixty-three million, two hundred forty-seven thousand, seven hundred twenty-eight".