28346393 has 2 divisors, whose sum is σ = 28346394. Its totient is φ = 28346392.

The previous prime is 28346387. The next prime is 28346401. The reversal of 28346393 is 39364382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18939904 + 9406489 = 4352^2 + 3067^2 .

It is a cyclic number.

It is not a de Polignac number, because 28346393 - 2¹² = 28342297 is a prime.

It is a super-2 number, since 2×28346393² = 1607035992220898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28346303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14173196 + 14173197.

It is an arithmetic number, because the mean of its divisors is an integer number (14173197).

Almost surely, 2^28346393 is an apocalyptic number.

It is an amenable number.

28346393 is a deficient number, since it is larger than the sum of its proper divisors (1).

28346393 is an equidigital number, since it uses as much as digits as its factorization.

28346393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 38.

The square root of 28346393 is about 5324.1330749710. The cubic root of 28346393 is about 304.9059747794.

The spelling of 28346393 in words is "twenty-eight million, three hundred forty-six thousand, three hundred ninety-three".