28080457 has 2 divisors, whose sum is σ = 28080458. Its totient is φ = 28080456.

The previous prime is 28080431. The next prime is 28080463. The reversal of 28080457 is 75408082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27762361 + 318096 = 5269^2 + 564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28080457 is a prime.

It is a super-3 number, since 3×28080457³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28080257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040228 + 14040229.

It is an arithmetic number, because the mean of its divisors is an integer number (14040229).

Almost surely, 2^28080457 is an apocalyptic number.

It is an amenable number.

28080457 is a deficient number, since it is larger than the sum of its proper divisors (1).

28080457 is an equidigital number, since it uses as much as digits as its factorization.

28080457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 28080457 is about 5299.0996405050. The cubic root of 28080457 is about 303.9494700468.

The spelling of 28080457 in words is "twenty-eight million, eighty thousand, four hundred fifty-seven".