28980097 has 2 divisors, whose sum is σ = 28980098. Its totient is φ = 28980096.

The previous prime is 28980089. The next prime is 28980101. The reversal of 28980097 is 79008982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25441936 + 3538161 = 5044^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 28980097 - 2³ = 28980089 is a prime.

It is not a weakly prime, because it can be changed into another prime (28980047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14490048 + 14490049.

It is an arithmetic number, because the mean of its divisors is an integer number (14490049).

Almost surely, 2^28980097 is an apocalyptic number.

It is an amenable number.

28980097 is a deficient number, since it is larger than the sum of its proper divisors (1).

28980097 is an equidigital number, since it uses as much as digits as its factorization.

28980097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 28980097 is about 5383.3165428015. The cubic root of 28980097 is about 307.1613810559.

The spelling of 28980097 in words is "twenty-eight million, nine hundred eighty thousand, ninety-seven".