28696968 has 24 divisors (see below), whose sum is σ = 77721150. Its totient is φ = 9565632.

The previous prime is 28696961. The next prime is 28696999. The reversal of 28696968 is 86969682.

It can be written as a sum of positive squares in only one way, i.e., 21178404 + 7518564 = 4602^2 + 2742^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28696961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199213 + ... + 199356.

Almost surely, 2^28696968 is an apocalyptic number.

It is an amenable number.

28696968 is an abundant number, since it is smaller than the sum of its proper divisors (49024182).

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

28696968 is a wasteful number, since it uses less digits than its factorization.

28696968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398581 (or 398574 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 28696968 is about 5356.9551052814. The cubic root of 28696968 is about 306.1578065957.

The spelling of 28696968 in words is "twenty-eight million, six hundred ninety-six thousand, nine hundred sixty-eight".