28496497 has 2 divisors, whose sum is σ = 28496498. Its totient is φ = 28496496.

The previous prime is 28496477. The next prime is 28496509. The reversal of 28496497 is 79469482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23726641 + 4769856 = 4871^2 + 2184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28496497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28496497.

It is not a weakly prime, because it can be changed into another prime (28496407) 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, 14248248 + 14248249.

It is an arithmetic number, because the mean of its divisors is an integer number (14248249).

Almost surely, 2^28496497 is an apocalyptic number.

It is an amenable number.

28496497 is a deficient number, since it is larger than the sum of its proper divisors (1).

28496497 is an equidigital number, since it uses as much as digits as its factorization.

28496497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 28496497 is about 5338.2110299238. The cubic root of 28496497 is about 305.4432219479.

The spelling of 28496497 in words is "twenty-eight million, four hundred ninety-six thousand, four hundred ninety-seven".