28714549 has 2 divisors, whose sum is σ = 28714550. Its totient is φ = 28714548.

The previous prime is 28714537. The next prime is 28714559. The reversal of 28714549 is 94541782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17791524 + 10923025 = 4218^2 + 3305^2 .

It is a cyclic number.

It is not a de Polignac number, because 28714549 - 2⁷ = 28714421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28714519) 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, 14357274 + 14357275.

It is an arithmetic number, because the mean of its divisors is an integer number (14357275).

Almost surely, 2^28714549 is an apocalyptic number.

It is an amenable number.

28714549 is a deficient number, since it is larger than the sum of its proper divisors (1).

28714549 is an equidigital number, since it uses as much as digits as its factorization.

28714549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 28714549 is about 5358.5958048728. The cubic root of 28714549 is about 306.2203156568.

The spelling of 28714549 in words is "twenty-eight million, seven hundred fourteen thousand, five hundred forty-nine".