20860829 has 8 divisors (see below), whose sum is σ = 22878720. Its totient is φ = 18863200.

The previous prime is 20860823. The next prime is 20860871. The reversal of 20860829 is 92806802.

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 20860829 - 2⁴ = 20860813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20860823) 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, 2864 + ... + 7065.

It is an arithmetic number, because the mean of its divisors is an integer number (2859840).

Almost surely, 2^20860829 is an apocalyptic number.

It is an amenable number.

20860829 is a deficient number, since it is larger than the sum of its proper divisors (2017891).

20860829 is a wasteful number, since it uses less digits than its factorization.

20860829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10131.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20860829 is about 4567.3656521019. The cubic root of 20860829 is about 275.2816024473.

The spelling of 20860829 in words is "twenty million, eight hundred sixty thousand, eight hundred twenty-nine".