28889996 has 6 divisors (see below), whose sum is σ = 50557500. Its totient is φ = 14444996.

The previous prime is 28889989. The next prime is 28890031. The reversal of 28889996 is 69998882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611246 + ... + 3611253.

It is an arithmetic number, because the mean of its divisors is an integer number (8426250).

Almost surely, 2^28889996 is an apocalyptic number.

It is an amenable number.

28889996 is a deficient number, since it is larger than the sum of its proper divisors (21667504).

28889996 is a wasteful number, since it uses less digits than its factorization.

28889996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222503 (or 7222501 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 59.

The square root of 28889996 is about 5374.9414880536. The cubic root of 28889996 is about 306.8427223695.

The spelling of 28889996 in words is "twenty-eight million, eight hundred eighty-nine thousand, nine hundred ninety-six".