28868716 has 12 divisors (see below), whose sum is σ = 51595488. Its totient is φ = 14127152.

The previous prime is 28868711. The next prime is 28868761. The reversal of 28868716 is 61786882.

It is not an unprimeable number, because it can be changed into a prime (28868711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76591 + ... + 76966.

It is an arithmetic number, because the mean of its divisors is an integer number (4299624).

Almost surely, 2^28868716 is an apocalyptic number.

It is an amenable number.

28868716 is a deficient number, since it is larger than the sum of its proper divisors (22726772).

28868716 is a wasteful number, since it uses less digits than its factorization.

28868716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153608 (or 153606 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 28868716 is about 5372.9615669573. The cubic root of 28868716 is about 306.7673650613.

It can be divided in two parts, 28868 and 716, that added together give a square (29584 = 172²).

The spelling of 28868716 in words is "twenty-eight million, eight hundred sixty-eight thousand, seven hundred sixteen".