20206830420 has 144 divisors (see below), whose sum is σ = 70093890048. Its totient is φ = 4615833600.

The previous prime is 20206830373. The next prime is 20206830431. The reversal of 20206830420 is 2403860202.

20206830420 is a `hidden beast` number, since 2 + 0 + 206 + 8 + 30 + 420 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2537445 + ... + 2545395.

Almost surely, 2^20206830420 is an apocalyptic number.

20206830420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20206830420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35046945024).

20206830420 is an abundant number, since it is smaller than the sum of its proper divisors (49887059628).

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

20206830420 is a wasteful number, since it uses less digits than its factorization.

20206830420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990 (or 9985 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 20206830420 in words is "twenty billion, two hundred six million, eight hundred thirty thousand, four hundred twenty".