20700834 has 96 divisors (see below), whose sum is σ = 54271296. Its totient is φ = 5201280.

The previous prime is 20700833. The next prime is 20700887. The reversal of 20700834 is 43800702.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20700833) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119572 + ... + 119744.

It is an arithmetic number, because the mean of its divisors is an integer number (565326).

Almost surely, 2^20700834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20700834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27135648).

20700834 is an abundant number, since it is smaller than the sum of its proper divisors (33570462).

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

20700834 is a wasteful number, since it uses less digits than its factorization.

20700834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20700834 is about 4549.8169193936. The cubic root of 20700834 is about 274.5760254714.

The spelling of 20700834 in words is "twenty million, seven hundred thousand, eight hundred thirty-four".