20804230 has 8 divisors (see below), whose sum is σ = 37447632. Its totient is φ = 8321688.

The previous prime is 20804159. The next prime is 20804257. The reversal of 20804230 is 3240802.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20804198 and 20804207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040202 + ... + 1040221.

It is an arithmetic number, because the mean of its divisors is an integer number (4680954).

Almost surely, 2^20804230 is an apocalyptic number.

20804230 is a deficient number, since it is larger than the sum of its proper divisors (16643402).

20804230 is a wasteful number, since it uses less digits than its factorization.

20804230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080430.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20804230 is about 4561.1654212493. The cubic root of 20804230 is about 275.0324149118.

The spelling of 20804230 in words is "twenty million, eight hundred four thousand, two hundred thirty".