28978036 has 12 divisors (see below), whose sum is σ = 51468928. Its totient is φ = 14272632.

The previous prime is 28978003. The next prime is 28978073. The reversal of 28978036 is 63087982.

It is a junction number, because it is equal to n+sod(n) for n = 28977983 and 28978001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53796 + ... + 54331.

Almost surely, 2^28978036 is an apocalyptic number.

It is an amenable number.

28978036 is a deficient number, since it is larger than the sum of its proper divisors (22490892).

28978036 is a wasteful number, since it uses less digits than its factorization.

28978036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108198 (or 108196 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 28978036 is about 5383.1251146523. The cubic root of 28978036 is about 307.1540993387.

The spelling of 28978036 in words is "twenty-eight million, nine hundred seventy-eight thousand, thirty-six".