28033777 has 2 divisors, whose sum is σ = 28033778. Its totient is φ = 28033776.

The previous prime is 28033771. The next prime is 28033781. The reversal of 28033777 is 77733082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21678336 + 6355441 = 4656^2 + 2521^2 .

It is a cyclic number.

It is not a de Polignac number, because 28033777 - 2³ = 28033769 is a prime.

It is not a weakly prime, because it can be changed into another prime (28033771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14016888 + 14016889.

It is an arithmetic number, because the mean of its divisors is an integer number (14016889).

Almost surely, 2^28033777 is an apocalyptic number.

It is an amenable number.

28033777 is a deficient number, since it is larger than the sum of its proper divisors (1).

28033777 is an equidigital number, since it uses as much as digits as its factorization.

28033777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 28033777 is about 5294.6932866787. The cubic root of 28033777 is about 303.7809515333.

The spelling of 28033777 in words is "twenty-eight million, thirty-three thousand, seven hundred seventy-seven".