28519097 has 2 divisors, whose sum is σ = 28519098. Its totient is φ = 28519096.

The previous prime is 28519063. The next prime is 28519109. The reversal of 28519097 is 79091582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19149376 + 9369721 = 4376^2 + 3061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28519097 is a prime.

It is not a weakly prime, because it can be changed into another prime (28519027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14259548 + 14259549.

It is an arithmetic number, because the mean of its divisors is an integer number (14259549).

Almost surely, 2^28519097 is an apocalyptic number.

It is an amenable number.

28519097 is a deficient number, since it is larger than the sum of its proper divisors (1).

28519097 is an equidigital number, since it uses as much as digits as its factorization.

28519097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 28519097 is about 5340.3274244188. The cubic root of 28519097 is about 305.5239475746.

The spelling of 28519097 in words is "twenty-eight million, five hundred nineteen thousand, ninety-seven".