20834146 has 16 divisors (see below), whose sum is σ = 34832160. Its totient is φ = 9288000.

The previous prime is 20834137. The next prime is 20834147. The reversal of 20834146 is 64143802.

It is not an unprimeable number, because it can be changed into a prime (20834147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15480 + ... + 16771.

It is an arithmetic number, because the mean of its divisors is an integer number (2177010).

Almost surely, 2^20834146 is an apocalyptic number.

20834146 is a deficient number, since it is larger than the sum of its proper divisors (13998014).

20834146 is a wasteful number, since it uses less digits than its factorization.

20834146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32289.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20834146 is about 4564.4436681813. The cubic root of 20834146 is about 275.1641818496.

Adding to 20834146 its reverse (64143802), we get a palindrome (84977948).

The spelling of 20834146 in words is "twenty million, eight hundred thirty-four thousand, one hundred forty-six".