20304086 has 24 divisors (see below), whose sum is σ = 35330904. Its totient is φ = 8648960.

The previous prime is 20304079. The next prime is 20304091. The reversal of 20304086 is 68040302.

It is a happy number.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 87026 + ... + 87258.

It is an arithmetic number, because the mean of its divisors is an integer number (1472121).

Almost surely, 2^20304086 is an apocalyptic number.

20304086 is a deficient number, since it is larger than the sum of its proper divisors (15026818).

20304086 is a wasteful number, since it uses less digits than its factorization.

20304086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20304086 is about 4506.0055481546. The cubic root of 20304086 is about 272.8105417993.

Adding to 20304086 its reverse (68040302), we get a palindrome (88344388).

It can be divided in two parts, 2030 and 4086, that added together give a palindrome (6116).

The spelling of 20304086 in words is "twenty million, three hundred four thousand, eighty-six".