28673783 has 2 divisors, whose sum is σ = 28673784. Its totient is φ = 28673782.

The previous prime is 28673773. The next prime is 28673797. The reversal of 28673783 is 38737682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28673783 - 2¹⁶ = 28608247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28673773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14336891 + 14336892.

It is an arithmetic number, because the mean of its divisors is an integer number (14336892).

Almost surely, 2^28673783 is an apocalyptic number.

28673783 is a deficient number, since it is larger than the sum of its proper divisors (1).

28673783 is an equidigital number, since it uses as much as digits as its factorization.

28673783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 28673783 is about 5354.7906588400. The cubic root of 28673783 is about 306.0753335248.

The spelling of 28673783 in words is "twenty-eight million, six hundred seventy-three thousand, seven hundred eighty-three".