28576512 has 108 divisors (see below), whose sum is σ = 83967520. Its totient is φ = 9345024.

The previous prime is 28576501. The next prime is 28576531. The reversal of 28576512 is 21567582.

It is a happy number.

It is a super-2 number, since 2×28576512² = 1633234076172288, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181938 + ... + 182094.

Almost surely, 2^28576512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28576512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41983760).

28576512 is an abundant number, since it is smaller than the sum of its proper divisors (55391008).

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

28576512 is a wasteful number, since it uses less digits than its factorization.

28576512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 241 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 28576512 is about 5345.7003283012. The cubic root of 28576512 is about 305.7288383408.

The spelling of 28576512 in words is "twenty-eight million, five hundred seventy-six thousand, five hundred twelve".