28814501 has 2 divisors, whose sum is σ = 28814502. Its totient is φ = 28814500.

The previous prime is 28814491. The next prime is 28814519. The reversal of 28814501 is 10541882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 11383876 = 4175^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 28814501 - 2⁶ = 28814437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28814521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14407250 + 14407251.

It is an arithmetic number, because the mean of its divisors is an integer number (14407251).

Almost surely, 2^28814501 is an apocalyptic number.

It is an amenable number.

28814501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28814501 is an equidigital number, since it uses as much as digits as its factorization.

28814501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 28814501 is about 5367.9140268823. The cubic root of 28814501 is about 306.5752099415.

The spelling of 28814501 in words is "twenty-eight million, eight hundred fourteen thousand, five hundred one".