28276628 has 24 divisors (see below), whose sum is σ = 51300480. Its totient is φ = 13628160.

The previous prime is 28276609. The next prime is 28276639. The reversal of 28276628 is 82667282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12548 + ... + 14628.

It is an arithmetic number, because the mean of its divisors is an integer number (2137520).

Almost surely, 2^28276628 is an apocalyptic number.

It is an amenable number.

28276628 is a deficient number, since it is larger than the sum of its proper divisors (23023852).

28276628 is a wasteful number, since it uses less digits than its factorization.

28276628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2205 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 28276628 is about 5317.5772678918. The cubic root of 28276628 is about 304.6556285207.

The spelling of 28276628 in words is "twenty-eight million, two hundred seventy-six thousand, six hundred twenty-eight".