63728828 has 6 divisors (see below), whose sum is σ = 111525456. Its totient is φ = 31864412.

The previous prime is 63728827. The next prime is 63728849. The reversal of 63728828 is 82882736.

It is a super-2 number, since 2×63728828² = 8122727036507168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63728827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7966100 + ... + 7966107.

It is an arithmetic number, because the mean of its divisors is an integer number (18587576).

Almost surely, 2^63728828 is an apocalyptic number.

It is an amenable number.

63728828 is a deficient number, since it is larger than the sum of its proper divisors (47796628).

63728828 is a wasteful number, since it uses less digits than its factorization.

63728828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15932211 (or 15932209 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 63728828 is about 7983.0337591670. The cubic root of 63728828 is about 399.4342585521.

The spelling of 63728828 in words is "sixty-three million, seven hundred twenty-eight thousand, eight hundred twenty-eight".