20304426 has 32 divisors (see below), whose sum is σ = 45264960. Its totient is φ = 6034176.

The previous prime is 20304419. The next prime is 20304433. The reversal of 20304426 is 62440302.

It is an interprime number because it is at equal distance from previous prime (20304419) and next prime (20304433).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3301 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (1414530).

Almost surely, 2^20304426 is an apocalyptic number.

20304426 is an abundant number, since it is smaller than the sum of its proper divisors (24960534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20304426 is a wasteful number, since it uses less digits than its factorization.

20304426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10518.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20304426 is about 4506.0432754247. The cubic root of 20304426 is about 272.8120645645.

Adding to 20304426 its reverse (62440302), we get a palindrome (82744728).

The spelling of 20304426 in words is "twenty million, three hundred four thousand, four hundred twenty-six".