33028397 has 2 divisors, whose sum is σ = 33028398. Its totient is φ = 33028396.

The previous prime is 33028379. The next prime is 33028409. The reversal of 33028397 is 79382033.

Together with previous prime (33028379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33016516 + 11881 = 5746^2 + 109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33028397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33028367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16514198 + 16514199.

It is an arithmetic number, because the mean of its divisors is an integer number (16514199).

Almost surely, 2^33028397 is an apocalyptic number.

It is an amenable number.

33028397 is a deficient number, since it is larger than the sum of its proper divisors (1).

33028397 is an equidigital number, since it uses as much as digits as its factorization.

33028397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 33028397 is about 5747.0337566435. The cubic root of 33028397 is about 320.8454110181.

The spelling of 33028397 in words is "thirty-three million, twenty-eight thousand, three hundred ninety-seven".