20210193 has 6 divisors (see below), whose sum is σ = 29192514. Its totient is φ = 13473456.

The previous prime is 20210189. The next prime is 20210237. The reversal of 20210193 is 39101202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19421649 + 788544 = 4407^2 + 888^2 .

It is not a de Polignac number, because 20210193 - 2² = 20210189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20210143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122780 + ... + 1122797.

It is an arithmetic number, because the mean of its divisors is an integer number (4865419).

Almost surely, 2^20210193 is an apocalyptic number.

It is an amenable number.

20210193 is a deficient number, since it is larger than the sum of its proper divisors (8982321).

20210193 is a wasteful number, since it uses less digits than its factorization.

20210193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245583 (or 2245580 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 20210193 is about 4495.5748242021. The cubic root of 20210193 is about 272.3893690017.

Adding to 20210193 its reverse (39101202), we get a palindrome (59311395).

The spelling of 20210193 in words is "twenty million, two hundred ten thousand, one hundred ninety-three".