28003036 has 24 divisors (see below), whose sum is σ = 51842000. Its totient is φ = 13198464.

The previous prime is 28003021. The next prime is 28003037. The reversal of 28003036 is 63030082.

It is a junction number, because it is equal to n+sod(n) for n = 28002998 and 28003016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28003037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16600 + ... + 18208.

Almost surely, 2^28003036 is an apocalyptic number.

It is an amenable number.

28003036 is a deficient number, since it is larger than the sum of its proper divisors (23838964).

28003036 is a wasteful number, since it uses less digits than its factorization.

28003036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 28003036 is about 5291.7894893883. The cubic root of 28003036 is about 303.6698718911.

The spelling of 28003036 in words is "twenty-eight million, three thousand, thirty-six".