20255829 has 8 divisors (see below), whose sum is σ = 29463072. Its totient is φ = 12276240.

The previous prime is 20255813. The next prime is 20255839. The reversal of 20255829 is 92855202.

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

It is not a de Polignac number, because 20255829 - 2⁴ = 20255813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 613813 = 20255829 / (2 + 0 + 2 + 5 + 5 + 8 + 2 + 9).

It is a self number, because there is not a number n which added to its sum of digits gives 20255829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306874 + ... + 306939.

It is an arithmetic number, because the mean of its divisors is an integer number (3682884).

Almost surely, 2^20255829 is an apocalyptic number.

It is an amenable number.

20255829 is a deficient number, since it is larger than the sum of its proper divisors (9207243).

20255829 is a wasteful number, since it uses less digits than its factorization.

20255829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613827.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 20255829 is about 4500.6476200654. The cubic root of 20255829 is about 272.5942394922.

The spelling of 20255829 in words is "twenty million, two hundred fifty-five thousand, eight hundred twenty-nine".