20266193 has 16 divisors (see below), whose sum is σ = 22208256. Its totient is φ = 18420480.

The previous prime is 20266171. The next prime is 20266199. The reversal of 20266193 is 39166202.

It is a cyclic number.

It is not a de Polignac number, because 20266193 - 2¹⁶ = 20200657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20266199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74648 + ... + 74918.

It is an arithmetic number, because the mean of its divisors is an integer number (1388016).

Almost surely, 2^20266193 is an apocalyptic number.

It is an amenable number.

20266193 is a deficient number, since it is larger than the sum of its proper divisors (1942063).

20266193 is a wasteful number, since it uses less digits than its factorization.

20266193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20266193 is about 4501.7988626770. The cubic root of 20266193 is about 272.6407229842.

The spelling of 20266193 in words is "twenty million, two hundred sixty-six thousand, one hundred ninety-three".