20304093 has 8 divisors (see below), whose sum is σ = 27123808. Its totient is φ = 13510224.

The previous prime is 20304091. The next prime is 20304121. The reversal of 20304093 is 39040302.

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

It is not a de Polignac number, because 20304093 - 2¹ = 20304091 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 (20304091) 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, 4546 + ... + 7827.

It is an arithmetic number, because the mean of its divisors is an integer number (3390476).

Almost surely, 2^20304093 is an apocalyptic number.

It is an amenable number.

20304093 is a deficient number, since it is larger than the sum of its proper divisors (6819715).

20304093 is a wasteful number, since it uses less digits than its factorization.

20304093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12923.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20304093 is about 4506.0063248957. The cubic root of 20304093 is about 272.8105731505.

Adding to 20304093 its reverse (39040302), we get a palindrome (59344395).

The spelling of 20304093 in words is "twenty million, three hundred four thousand, ninety-three".