28069996 has 6 divisors (see below), whose sum is σ = 49122500. Its totient is φ = 14034996.

The previous prime is 28069981. The next prime is 28069997. The reversal of 28069996 is 69996082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28069997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3508746 + ... + 3508753.

Almost surely, 2^28069996 is an apocalyptic number.

It is an amenable number.

28069996 is a deficient number, since it is larger than the sum of its proper divisors (21052504).

28069996 is a wasteful number, since it uses less digits than its factorization.

28069996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017503 (or 7017501 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 28069996 is about 5298.1124940869. The cubic root of 28069996 is about 303.9117212508.

The spelling of 28069996 in words is "twenty-eight million, sixty-nine thousand, nine hundred ninety-six".