28514257 has 2 divisors, whose sum is σ = 28514258. Its totient is φ = 28514256.

The previous prime is 28514251. The next prime is 28514263. The reversal of 28514257 is 75241582.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (28514251) and next prime (28514263).

It can be written as a sum of positive squares in only one way, i.e., 27867841 + 646416 = 5279^2 + 804^2 .

It is a cyclic number.

It is not a de Polignac number, because 28514257 - 2³ = 28514249 is a prime.

It is not a weakly prime, because it can be changed into another prime (28514251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14257128 + 14257129.

It is an arithmetic number, because the mean of its divisors is an integer number (14257129).

Almost surely, 2^28514257 is an apocalyptic number.

It is an amenable number.

28514257 is a deficient number, since it is larger than the sum of its proper divisors (1).

28514257 is an equidigital number, since it uses as much as digits as its factorization.

28514257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22400, while the sum is 34.

The square root of 28514257 is about 5339.8742494557. The cubic root of 28514257 is about 305.5066630212.

The spelling of 28514257 in words is "twenty-eight million, five hundred fourteen thousand, two hundred fifty-seven".