63728316 has 24 divisors (see below), whose sum is σ = 165221840. Its totient is φ = 21242736.

The previous prime is 63728311. The next prime is 63728317. The reversal of 63728316 is 61382736.

It is a happy number.

63728316 is a `hidden beast` number, since 637 + 2 + 8 + 3 + 16 = 666.

It is a super-2 number, since 2×63728316² = 8122596520391712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63728311) 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, 294931 + ... + 295146.

Almost surely, 2^63728316 is an apocalyptic number.

It is an amenable number.

63728316 is an abundant number, since it is smaller than the sum of its proper divisors (101493524).

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

63728316 is a wasteful number, since it uses less digits than its factorization.

63728316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590090 (or 590082 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 63728316 is about 7983.0016910934. The cubic root of 63728316 is about 399.4331888589.

The spelling of 63728316 in words is "sixty-three million, seven hundred twenty-eight thousand, three hundred sixteen".