428548563 has 30 divisors (see below), whose sum is σ = 680087276. Its totient is φ = 268878528.

The previous prime is 428548543. The next prime is 428548567. The reversal of 428548563 is 365845824.

428548563 is a `hidden beast` number, since 4 + 2 + 85 + 4 + 8 + 563 = 666.

It is not a de Polignac number, because 428548563 - 2⁵ = 428548531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428548567) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 14256 + ... + 32562.

Almost surely, 2^428548563 is an apocalyptic number.

428548563 is a deficient number, since it is larger than the sum of its proper divisors (251538713).

428548563 is a wasteful number, since it uses less digits than its factorization.

428548563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18353 (or 18327 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 428548563 is about 20701.4145168875. The cubic root of 428548563 is about 753.9340324381.

The spelling of 428548563 in words is "four hundred twenty-eight million, five hundred forty-eight thousand, five hundred sixty-three".