28437113 has 2 divisors, whose sum is σ = 28437114. Its totient is φ = 28437112.

The previous prime is 28437089. The next prime is 28437121. The reversal of 28437113 is 31173482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28430224 + 6889 = 5332^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 28437113 - 2⁶ = 28437049 is a prime.

It is not a weakly prime, because it can be changed into another prime (28437173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14218556 + 14218557.

It is an arithmetic number, because the mean of its divisors is an integer number (14218557).

Almost surely, 2^28437113 is an apocalyptic number.

It is an amenable number.

28437113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28437113 is an equidigital number, since it uses as much as digits as its factorization.

28437113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 28437113 is about 5332.6459661223. The cubic root of 28437113 is about 305.2309028163.

The spelling of 28437113 in words is "twenty-eight million, four hundred thirty-seven thousand, one hundred thirteen".