20106830 has 16 divisors (see below), whose sum is σ = 37766304. Its totient is φ = 7692960.

The previous prime is 20106803. The next prime is 20106841. The reversal of 20106830 is 3860102.

It is a super-2 number, since 2×20106830² = 808569225297800, which contains 22 as substring.

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, 43481 + ... + 43940.

It is an arithmetic number, because the mean of its divisors is an integer number (2360394).

Almost surely, 2^20106830 is an apocalyptic number.

20106830 is a deficient number, since it is larger than the sum of its proper divisors (17659474).

20106830 is a wasteful number, since it uses less digits than its factorization.

20106830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87451.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20106830 is about 4484.0640048956. The cubic root of 20106830 is about 271.9242057413.

Adding to 20106830 its reverse (3860102), we get a palindrome (23966932).

The spelling of 20106830 in words is "twenty million, one hundred six thousand, eight hundred thirty".