28420876 has 24 divisors (see below), whose sum is σ = 55152720. Its totient is φ = 12705600.

The previous prime is 28420867. The next prime is 28420883. The reversal of 28420876 is 67802482.

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, 2611 + ... + 7978.

It is an arithmetic number, because the mean of its divisors is an integer number (2298030).

Almost surely, 2^28420876 is an apocalyptic number.

It is an amenable number.

28420876 is a deficient number, since it is larger than the sum of its proper divisors (26731844).

28420876 is a wasteful number, since it uses less digits than its factorization.

28420876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665 (or 10663 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 28420876 is about 5331.1233337825. The cubic root of 28420876 is about 305.1727982572.

The spelling of 28420876 in words is "twenty-eight million, four hundred twenty thousand, eight hundred seventy-six".