20368093 has 4 divisors (see below), whose sum is σ = 20918620. Its totient is φ = 19817568.

The previous prime is 20368079. The next prime is 20368097. The reversal of 20368093 is 39086302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14002564 + 6365529 = 3742^2 + 2523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20368093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20368097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275208 + ... + 275281.

It is an arithmetic number, because the mean of its divisors is an integer number (5229655).

Almost surely, 2^20368093 is an apocalyptic number.

It is an amenable number.

20368093 is a deficient number, since it is larger than the sum of its proper divisors (550527).

20368093 is an equidigital number, since it uses as much as digits as its factorization.

20368093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550526.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20368093 is about 4513.1023697674. The cubic root of 20368093 is about 273.0969121955.

The spelling of 20368093 in words is "twenty million, three hundred sixty-eight thousand, ninety-three".