20286133 has 8 divisors (see below), whose sum is σ = 23228352. Its totient is φ = 17354976.

The previous prime is 20286131. The next prime is 20286139. The reversal of 20286133 is 33168202.

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 20286133 - 2¹ = 20286131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20286098 and 20286107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20286131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641 + ... + 6577.

It is an arithmetic number, because the mean of its divisors is an integer number (2903544).

Almost surely, 2^20286133 is an apocalyptic number.

It is an amenable number.

20286133 is a deficient number, since it is larger than the sum of its proper divisors (2942219).

20286133 is an equidigital number, since it uses as much as digits as its factorization.

20286133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5531.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20286133 is about 4504.0129884360. The cubic root of 20286133 is about 272.7301111590.

The spelling of 20286133 in words is "twenty million, two hundred eighty-six thousand, one hundred thirty-three".