20007834 has 96 divisors (see below), whose sum is σ = 52297728. Its totient is φ = 4989600.

The previous prime is 20007811. The next prime is 20007847. The reversal of 20007834 is 43870002.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157479 + ... + 157605.

It is an arithmetic number, because the mean of its divisors is an integer number (544768).

Almost surely, 2^20007834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20007834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26148864).

20007834 is an abundant number, since it is smaller than the sum of its proper divisors (32289894).

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

20007834 is a wasteful number, since it uses less digits than its factorization.

20007834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 181 counting only the distinct ones).

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

The square root of 20007834 is about 4473.0117370738. The cubic root of 20007834 is about 271.4771982791.

Adding to 20007834 its reverse (43870002), we get a palindrome (63877836).

The spelling of 20007834 in words is "twenty million, seven thousand, eight hundred thirty-four".