28300457 has 2 divisors, whose sum is σ = 28300458. Its totient is φ = 28300456.

The previous prime is 28300453. The next prime is 28300469. The reversal of 28300457 is 75400382.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18181696 + 10118761 = 4264^2 + 3181^2 .

It is a cyclic number.

It is not a de Polignac number, because 28300457 - 2² = 28300453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28300451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14150228 + 14150229.

It is an arithmetic number, because the mean of its divisors is an integer number (14150229).

Almost surely, 2^28300457 is an apocalyptic number.

It is an amenable number.

28300457 is a deficient number, since it is larger than the sum of its proper divisors (1).

28300457 is an equidigital number, since it uses as much as digits as its factorization.

28300457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28300457 is about 5319.8173840838. The cubic root of 28300457 is about 304.7411832843.

The spelling of 28300457 in words is "twenty-eight million, three hundred thousand, four hundred fifty-seven".