28738783 has 2 divisors, whose sum is σ = 28738784. Its totient is φ = 28738782.

The previous prime is 28738781. The next prime is 28738793. The reversal of 28738783 is 38783782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28738783 - 2¹ = 28738781 is a prime.

Together with 28738781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28738781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14369391 + 14369392.

It is an arithmetic number, because the mean of its divisors is an integer number (14369392).

Almost surely, 2^28738783 is an apocalyptic number.

28738783 is a deficient number, since it is larger than the sum of its proper divisors (1).

28738783 is an equidigital number, since it uses as much as digits as its factorization.

28738783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 46.

The square root of 28738783 is about 5360.8565546935. The cubic root of 28738783 is about 306.3064375787.

The spelling of 28738783 in words is "twenty-eight million, seven hundred thirty-eight thousand, seven hundred eighty-three".