28469928 has 32 divisors (see below), whose sum is σ = 71834400. Its totient is φ = 9402048.

The previous prime is 28469911. The next prime is 28469933. The reversal of 28469928 is 82996482.

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, 2826 + ... + 8057.

It is an arithmetic number, because the mean of its divisors is an integer number (2244825).

Almost surely, 2^28469928 is an apocalyptic number.

It is an amenable number.

28469928 is an abundant number, since it is smaller than the sum of its proper divisors (43364472).

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

28469928 is a wasteful number, since it uses less digits than its factorization.

28469928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001 (or 10997 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 28469928 is about 5335.7218818076. The cubic root of 28469928 is about 305.3482647279.

The spelling of 28469928 in words is "twenty-eight million, four hundred sixty-nine thousand, nine hundred twenty-eight".