20393104 has 20 divisors (see below), whose sum is σ = 39958380. Its totient is φ = 10081280.

The previous prime is 20393101. The next prime is 20393123. The reversal of 20393104 is 40139302.

It can be written as a sum of positive squares in 2 ways, for example, as 1557504 + 18835600 = 1248^2 + 4340^2 .

It is not an unprimeable number, because it can be changed into a prime (20393101) 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 3 ways as a sum of consecutive naturals, for example, 5737 + ... + 8584.

It is an arithmetic number, because the mean of its divisors is an integer number (1997919).

Almost surely, 2^20393104 is an apocalyptic number.

It is an amenable number.

20393104 is a deficient number, since it is larger than the sum of its proper divisors (19565276).

20393104 is a wasteful number, since it uses less digits than its factorization.

20393104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14418 (or 14412 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20393104 is about 4515.8724516975. The cubic root of 20393104 is about 273.2086495907.

The spelling of 20393104 in words is "twenty million, three hundred ninety-three thousand, one hundred four".