28576628 has 12 divisors (see below), whose sum is σ = 50051232. Its totient is φ = 14276280.

The previous prime is 28576621. The next prime is 28576663. The reversal of 28576628 is 82667582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28576621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4313 + ... + 8703.

It is an arithmetic number, because the mean of its divisors is an integer number (4170936).

Almost surely, 2^28576628 is an apocalyptic number.

It is an amenable number.

28576628 is a deficient number, since it is larger than the sum of its proper divisors (21474604).

28576628 is a wasteful number, since it uses less digits than its factorization.

28576628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022 (or 6020 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 28576628 is about 5345.7111781315. The cubic root of 28576628 is about 305.7292520197.

The spelling of 28576628 in words is "twenty-eight million, five hundred seventy-six thousand, six hundred twenty-eight".