20261193 has 8 divisors (see below), whose sum is σ = 27048000. Its totient is φ = 13490928.

The previous prime is 20261191. The next prime is 20261231. The reversal of 20261193 is 39116202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20261193 - 2¹ = 20261191 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20261191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918 + ... + 6431.

It is an arithmetic number, because the mean of its divisors is an integer number (3381000).

Almost surely, 2^20261193 is an apocalyptic number.

It is an amenable number.

20261193 is a deficient number, since it is larger than the sum of its proper divisors (6786807).

20261193 is an equidigital number, since it uses as much as digits as its factorization.

20261193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 20261193 is about 4501.2434948578. The cubic root of 20261193 is about 272.6182995039.

Adding to 20261193 its reverse (39116202), we get a palindrome (59377395).

The spelling of 20261193 in words is "twenty million, two hundred sixty-one thousand, one hundred ninety-three".