20843000706 has 64 divisors (see below), whose sum is σ = 47630177280. Its totient is φ = 6018872640.

The previous prime is 20843000681. The next prime is 20843000743. The reversal of 20843000706 is 60700034802.

20843000706 is a nontrivial binomial coefficient, being equal to C(204172, 2).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382821 + ... + 433863.

It is an arithmetic number, because the mean of its divisors is an integer number (744221520).

Almost surely, 2^20843000706 is an apocalyptic number.

20843000706 is the 204171-st triangular number and also the 102086-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20843000706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23815088640).

20843000706 is an abundant number, since it is smaller than the sum of its proper divisors (26787176574).

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

20843000706 is a wasteful number, since it uses less digits than its factorization.

20843000706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51351.

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 20843000706 in words is "twenty billion, eight hundred forty-three million, seven hundred six", and thus it is an aban number.