63728541 has 24 divisors (see below), whose sum is σ = 95093024. Its totient is φ = 41096160.

The previous prime is 63728531. The next prime is 63728543. The reversal of 63728541 is 14582736.

It is not a de Polignac number, because 63728541 - 2⁶ = 63728477 is a prime.

It is a super-2 number, since 2×63728541² = 8122653875977362, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63728496 and 63728505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63728543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69810 + ... + 70716.

Almost surely, 2^63728541 is an apocalyptic number.

It is an amenable number.

63728541 is a deficient number, since it is larger than the sum of its proper divisors (31364483).

63728541 is a wasteful number, since it uses less digits than its factorization.

63728541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1158 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 63728541 is about 7983.0157835244. The cubic root of 63728541 is about 399.4336589396.

The spelling of 63728541 in words is "sixty-three million, seven hundred twenty-eight thousand, five hundred forty-one".