28777043 has 2 divisors, whose sum is σ = 28777044. Its totient is φ = 28777042.

The previous prime is 28777037. The next prime is 28777051. The reversal of 28777043 is 34077782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28777043 - 2⁴ = 28777027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28776988 and 28777006.

It is not a weakly prime, because it can be changed into another prime (28777033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14388521 + 14388522.

It is an arithmetic number, because the mean of its divisors is an integer number (14388522).

Almost surely, 2^28777043 is an apocalyptic number.

28777043 is a deficient number, since it is larger than the sum of its proper divisors (1).

28777043 is an equidigital number, since it uses as much as digits as its factorization.

28777043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 28777043 is about 5364.4238274022. The cubic root of 28777043 is about 306.4423060961.

The spelling of 28777043 in words is "twenty-eight million, seven hundred seventy-seven thousand, forty-three".