63642328 has 16 divisors (see below), whose sum is σ = 119722680. Its totient is φ = 31716288.

The previous prime is 63642323. The next prime is 63642377. The reversal of 63642328 is 82324636.

It is a junction number, because it is equal to n+sod(n) for n = 63642293 and 63642302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63642323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10501 + ... + 15412.

Almost surely, 2^63642328 is an apocalyptic number.

It is an amenable number.

63642328 is a deficient number, since it is larger than the sum of its proper divisors (56080352).

63642328 is a wasteful number, since it uses less digits than its factorization.

63642328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26226 (or 26222 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 63642328 is about 7977.6141796906. The cubic root of 63642328 is about 399.2534575527.

The spelling of 63642328 in words is "sixty-three million, six hundred forty-two thousand, three hundred twenty-eight".