42563728 has 20 divisors (see below), whose sum is σ = 83463408. Its totient is φ = 21024800.

The previous prime is 42563707. The next prime is 42563783. The reversal of 42563728 is 82736524.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14698 + ... + 17353.

Almost surely, 2^42563728 is an apocalyptic number.

It is an amenable number.

42563728 is a deficient number, since it is larger than the sum of its proper divisors (40899680).

42563728 is a wasteful number, since it uses less digits than its factorization.

42563728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32142 (or 32136 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 42563728 is about 6524.0882887956. The cubic root of 42563728 is about 349.1509433197.

The spelling of 42563728 in words is "forty-two million, five hundred sixty-three thousand, seven hundred twenty-eight".