28068816 has 20 divisors (see below), whose sum is σ = 72511232. Its totient is φ = 9356256.

The previous prime is 28068791. The next prime is 28068841. The reversal of 28068816 is 61886082.

It is an interprime number because it is at equal distance from previous prime (28068791) and next prime (28068841).

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, 292336 + ... + 292431.

Almost surely, 2^28068816 is an apocalyptic number.

It is an amenable number.

28068816 is an abundant number, since it is smaller than the sum of its proper divisors (44442416).

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

28068816 is a wasteful number, since it uses less digits than its factorization.

28068816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584778 (or 584772 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28068816 is about 5298.0011325027. The cubic root of 28068816 is about 303.9074626009.

It can be divided in two parts, 280 and 68816, that added together give a palindrome (69096).

The spelling of 28068816 in words is "twenty-eight million, sixty-eight thousand, eight hundred sixteen".