20040193 has 12 divisors (see below), whose sum is σ = 21659088. Its totient is φ = 18529560.

The previous prime is 20040191. The next prime is 20040197. The reversal of 20040193 is 39104002.

It is not a de Polignac number, because 20040193 - 2¹ = 20040191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 20040193.

It is not an unprimeable number, because it can be changed into a prime (20040191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14878 + ... + 16168.

It is an arithmetic number, because the mean of its divisors is an integer number (1804924).

Almost surely, 2^20040193 is an apocalyptic number.

It is an amenable number.

20040193 is a deficient number, since it is larger than the sum of its proper divisors (1618895).

20040193 is a wasteful number, since it uses less digits than its factorization.

20040193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20040193 is about 4476.6274135782. The cubic root of 20040193 is about 271.6234742996.

Adding to 20040193 its reverse (39104002), we get a palindrome (59144195).

The spelling of 20040193 in words is "twenty million, forty thousand, one hundred ninety-three".