28889963 has 2 divisors, whose sum is σ = 28889964. Its totient is φ = 28889962.

The previous prime is 28889951. The next prime is 28889989. The reversal of 28889963 is 36998882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28889963 - 2¹⁰ = 28888939 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28889363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14444981 + 14444982.

It is an arithmetic number, because the mean of its divisors is an integer number (14444982).

Almost surely, 2^28889963 is an apocalyptic number.

28889963 is a deficient number, since it is larger than the sum of its proper divisors (1).

28889963 is an equidigital number, since it uses as much as digits as its factorization.

28889963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 53.

The square root of 28889963 is about 5374.9384182519. The cubic root of 28889963 is about 306.8426055376.

The spelling of 28889963 in words is "twenty-eight million, eight hundred eighty-nine thousand, nine hundred sixty-three".