28421983 has 2 divisors, whose sum is σ = 28421984. Its totient is φ = 28421982.

The previous prime is 28421971. The next prime is 28421993. The reversal of 28421983 is 38912482.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28421983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28421993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14210991 + 14210992.

It is an arithmetic number, because the mean of its divisors is an integer number (14210992).

Almost surely, 2^28421983 is an apocalyptic number.

28421983 is a deficient number, since it is larger than the sum of its proper divisors (1).

28421983 is an equidigital number, since it uses as much as digits as its factorization.

28421983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 28421983 is about 5331.2271570437. The cubic root of 28421983 is about 305.1767603906.

The spelling of 28421983 in words is "twenty-eight million, four hundred twenty-one thousand, nine hundred eighty-three".