20026830 has 16 divisors (see below), whose sum is σ = 48064464. Its totient is φ = 5340480.

The previous prime is 20026829. The next prime is 20026847. The reversal of 20026830 is 3862002.

It is a junction number, because it is equal to n+sod(n) for n = 20026797 and 20026806.

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 7 ways as a sum of consecutive naturals, for example, 333751 + ... + 333810.

It is an arithmetic number, because the mean of its divisors is an integer number (3004029).

Almost surely, 2^20026830 is an apocalyptic number.

20026830 is an abundant number, since it is smaller than the sum of its proper divisors (28037634).

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

20026830 is a wasteful number, since it uses less digits than its factorization.

20026830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667571.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20026830 is about 4475.1346348462. The cubic root of 20026830 is about 271.5630871307.

Adding to 20026830 its reverse (3862002), we get a palindrome (23888832).

The spelling of 20026830 in words is "twenty million, twenty-six thousand, eight hundred thirty".