28028876 has 12 divisors (see below), whose sum is σ = 51632280. Its totient is φ = 13276800.

The previous prime is 28028863. The next prime is 28028879. The reversal of 28028876 is 67882082.

It is not an unprimeable number, because it can be changed into a prime (28028879) 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, 184325 + ... + 184476.

It is an arithmetic number, because the mean of its divisors is an integer number (4302690).

Almost surely, 2^28028876 is an apocalyptic number.

It is an amenable number.

28028876 is a deficient number, since it is larger than the sum of its proper divisors (23603404).

28028876 is a wasteful number, since it uses less digits than its factorization.

28028876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368824 (or 368822 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 28028876 is about 5294.2304445500. The cubic root of 28028876 is about 303.7632476850.

It can be divided in two parts, 28028 and 876, that multiplied together give a triangular number (24552528 = T₇₀₀₇).

The spelling of 28028876 in words is "twenty-eight million, twenty-eight thousand, eight hundred seventy-six".