28656983 has 2 divisors, whose sum is σ = 28656984. Its totient is φ = 28656982.

The previous prime is 28656973. The next prime is 28657003. The reversal of 28656983 is 38965682.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28656983 - 2⁴ = 28656967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28656973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14328491 + 14328492.

It is an arithmetic number, because the mean of its divisors is an integer number (14328492).

Almost surely, 2^28656983 is an apocalyptic number.

28656983 is a deficient number, since it is larger than the sum of its proper divisors (1).

28656983 is an equidigital number, since it uses as much as digits as its factorization.

28656983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The square root of 28656983 is about 5353.2217402234. The cubic root of 28656983 is about 306.0155452253.

The spelling of 28656983 in words is "twenty-eight million, six hundred fifty-six thousand, nine hundred eighty-three".