28900936 has 32 divisors (see below), whose sum is σ = 56376000. Its totient is φ = 13873216.

The previous prime is 28900913. The next prime is 28900939. The reversal of 28900936 is 63900982.

It is a junction number, because it is equal to n+sod(n) for n = 28900895 and 28900904.

It is not an unprimeable number, because it can be changed into a prime (28900939) 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, 80325 + ... + 80683.

It is an arithmetic number, because the mean of its divisors is an integer number (1761750).

Almost surely, 2^28900936 is an apocalyptic number.

It is an amenable number.

28900936 is a deficient number, since it is larger than the sum of its proper divisors (27475064).

28900936 is a wasteful number, since it uses less digits than its factorization.

28900936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 28900936 is about 5375.9590772252. The cubic root of 28900936 is about 306.8814489901.

The spelling of 28900936 in words is "twenty-eight million, nine hundred thousand, nine hundred thirty-six".