20026630 has 32 divisors (see below), whose sum is σ = 39158784. Its totient is φ = 7330176.

The previous prime is 20026619. The next prime is 20026631. The reversal of 20026630 is 3662002.

It is a junction number, because it is equal to n+sod(n) for n = 20026598 and 20026607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20026631) 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, 15904 + ... + 17116.

It is an arithmetic number, because the mean of its divisors is an integer number (1223712).

Almost surely, 2^20026630 is an apocalyptic number.

20026630 is a deficient number, since it is larger than the sum of its proper divisors (19132154).

20026630 is a wasteful number, since it uses less digits than its factorization.

20026630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20026630 is about 4475.1122890940. The cubic root of 20026630 is about 271.5621831301.

Adding to 20026630 its reverse (3662002), we get a palindrome (23688632).

The spelling of 20026630 in words is "twenty million, twenty-six thousand, six hundred thirty".