20304838 has 8 divisors (see below), whose sum is σ = 30759120. Its totient is φ = 10051800.

The previous prime is 20304829. The next prime is 20304839. The reversal of 20304838 is 83840302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304839) 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, 50058 + ... + 50461.

It is an arithmetic number, because the mean of its divisors is an integer number (3844890).

Almost surely, 2^20304838 is an apocalyptic number.

20304838 is a deficient number, since it is larger than the sum of its proper divisors (10454282).

20304838 is a wasteful number, since it uses less digits than its factorization.

20304838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100622.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20304838 is about 4506.0889915757. The cubic root of 20304838 is about 272.8139097748.

The spelling of 20304838 in words is "twenty million, three hundred four thousand, eight hundred thirty-eight".