28054277 has 2 divisors, whose sum is σ = 28054278. Its totient is φ = 28054276.

The previous prime is 28054261. The next prime is 28054303. The reversal of 28054277 is 77245082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23174596 + 4879681 = 4814^2 + 2209^2 .

It is a cyclic number.

It is not a de Polignac number, because 28054277 - 2⁴ = 28054261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28054207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027138 + 14027139.

It is an arithmetic number, because the mean of its divisors is an integer number (14027139).

Almost surely, 2^28054277 is an apocalyptic number.

It is an amenable number.

28054277 is a deficient number, since it is larger than the sum of its proper divisors (1).

28054277 is an equidigital number, since it uses as much as digits as its factorization.

28054277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 28054277 is about 5296.6288335129. The cubic root of 28054277 is about 303.8549811839.

The spelling of 28054277 in words is "twenty-eight million, fifty-four thousand, two hundred seventy-seven".