20427000833 has 64 divisors (see below), whose sum is σ = 23782809600. Its totient is φ = 17443641600.

The previous prime is 20427000829. The next prime is 20427000851. The reversal of 20427000833 is 33800072402.

It is not a de Polignac number, because 20427000833 - 2² = 20427000829 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20427000796 and 20427000805.

It is not an unprimeable number, because it can be changed into a prime (20427009833) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89200763 + ... + 89200991.

It is an arithmetic number, because the mean of its divisors is an integer number (371606400).

Almost surely, 2^20427000833 is an apocalyptic number.

20427000833 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20427000833 is the 82517-th octagonal number.

It is an amenable number.

20427000833 is a deficient number, since it is larger than the sum of its proper divisors (3355808767).

20427000833 is a wasteful number, since it uses less digits than its factorization.

20427000833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462.

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 20427000833 in words is "twenty billion, four hundred twenty-seven million, eight hundred thirty-three", and thus it is an aban number.