28863532 has 12 divisors (see below), whose sum is σ = 50553720. Its totient is φ = 14419616.

The previous prime is 28863529. The next prime is 28863547. The reversal of 28863532 is 23536882.

It is a junction number, because it is equal to n+sod(n) for n = 28863491 and 28863500.

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, 4248 + ... + 8704.

It is an arithmetic number, because the mean of its divisors is an integer number (4212810).

Almost surely, 2^28863532 is an apocalyptic number.

It is an amenable number.

28863532 is a deficient number, since it is larger than the sum of its proper divisors (21690188).

28863532 is a wasteful number, since it uses less digits than its factorization.

28863532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080 (or 6078 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 28863532 is about 5372.4791297873. The cubic root of 28863532 is about 306.7490017319.

The spelling of 28863532 in words is "twenty-eight million, eight hundred sixty-three thousand, five hundred thirty-two".