20834929 has 8 divisors (see below), whose sum is σ = 21461832. Its totient is φ = 20213760.

The previous prime is 20834927. The next prime is 20834939. The reversal of 20834929 is 92943802.

It can be written as a sum of positive squares in 4 ways, for example, as 898704 + 19936225 = 948^2 + 4465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20834929 - 2¹ = 20834927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20834927) 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, 6597 + ... + 9229.

It is an arithmetic number, because the mean of its divisors is an integer number (2682729).

Almost surely, 2^20834929 is an apocalyptic number.

It is an amenable number.

20834929 is a deficient number, since it is larger than the sum of its proper divisors (626903).

20834929 is a wasteful number, since it uses less digits than its factorization.

20834929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 20834929 is about 4564.5294390550. The cubic root of 20834929 is about 275.1676289289.

The spelling of 20834929 in words is "twenty million, eight hundred thirty-four thousand, nine hundred twenty-nine".