20304466 has 32 divisors (see below), whose sum is σ = 38787840. Its totient is φ = 7753536.

The previous prime is 20304463. The next prime is 20304481. The reversal of 20304466 is 66440302.

20304466 is a modest number, since divided by 4466 gives 2030 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 20304466.

It is not an unprimeable number, because it can be changed into a prime (20304461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3355 + ... + 7201.

It is an arithmetic number, because the mean of its divisors is an integer number (1212120).

Almost surely, 2^20304466 is an apocalyptic number.

20304466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20304466 is a deficient number, since it is larger than the sum of its proper divisors (18483374).

20304466 is a wasteful number, since it uses less digits than its factorization.

20304466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 20304466 is about 4506.0477139063. The cubic root of 20304466 is about 272.8122437122.

Adding to 20304466 its reverse (66440302), we get a palindrome (86744768).

The spelling of 20304466 in words is "twenty million, three hundred four thousand, four hundred sixty-six".