20935357 has 2 divisors, whose sum is σ = 20935358. Its totient is φ = 20935356.

The previous prime is 20935337. The next prime is 20935373. The reversal of 20935357 is 75353902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19882681 + 1052676 = 4459^2 + 1026^2 .

It is a cyclic number.

It is not a de Polignac number, because 20935357 - 2¹⁵ = 20902589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20935307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10467678 + 10467679.

It is an arithmetic number, because the mean of its divisors is an integer number (10467679).

Almost surely, 2^20935357 is an apocalyptic number.

It is an amenable number.

20935357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20935357 is an equidigital number, since it uses as much as digits as its factorization.

20935357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 34.

The square root of 20935357 is about 4575.5171292434. The cubic root of 20935357 is about 275.6090391534.

The spelling of 20935357 in words is "twenty million, nine hundred thirty-five thousand, three hundred fifty-seven".