20308093 has 8 divisors (see below), whose sum is σ = 23021600. Its totient is φ = 17759088.

The previous prime is 20308073. The next prime is 20308097. The reversal of 20308093 is 39080302.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20308093 - 2⁵ = 20308061 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 (20308097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40863 + ... + 41356.

It is an arithmetic number, because the mean of its divisors is an integer number (2877700).

Almost surely, 2^20308093 is an apocalyptic number.

It is an amenable number.

20308093 is a deficient number, since it is larger than the sum of its proper divisors (2713507).

20308093 is a wasteful number, since it uses less digits than its factorization.

20308093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82251.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20308093 is about 4506.4501550555. The cubic root of 20308093 is about 272.8284869547.

Adding to 20308093 its reverse (39080302), we get a palindrome (59388395).

The spelling of 20308093 in words is "twenty million, three hundred eight thousand, ninety-three".