28000337 has 2 divisors, whose sum is σ = 28000338. Its totient is φ = 28000336.

The previous prime is 28000321. The next prime is 28000339. The reversal of 28000337 is 73300082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27867841 + 132496 = 5279^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 28000337 - 2⁴ = 28000321 is a prime.

It is a super-2 number, since 2×28000337² = 1568037744227138, which contains 22 as substring.

Together with 28000339, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28000339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14000168 + 14000169.

It is an arithmetic number, because the mean of its divisors is an integer number (14000169).

Almost surely, 2^28000337 is an apocalyptic number.

It is an amenable number.

28000337 is a deficient number, since it is larger than the sum of its proper divisors (1).

28000337 is an equidigital number, since it uses as much as digits as its factorization.

28000337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 28000337 is about 5291.5344655402. The cubic root of 28000337 is about 303.6601154333.

The spelling of 28000337 in words is "twenty-eight million, three hundred thirty-seven", and thus it is an aban number.