20856027 has 8 divisors (see below), whose sum is σ = 28189264. Its totient is φ = 13713408.

The previous prime is 20856023. The next prime is 20856029. The reversal of 20856027 is 72065802.

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

It is not a de Polignac number, because 20856027 - 2² = 20856023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20855985 and 20856003.

It is not an unprimeable number, because it can be changed into a prime (20856023) 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, 47398 + ... + 47835.

It is an arithmetic number, because the mean of its divisors is an integer number (3523658).

Almost surely, 2^20856027 is an apocalyptic number.

20856027 is a deficient number, since it is larger than the sum of its proper divisors (7333237).

20856027 is an equidigital number, since it uses as much as digits as its factorization.

20856027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95309.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20856027 is about 4566.8399358856. The cubic root of 20856027 is about 275.2604782676.

The spelling of 20856027 in words is "twenty million, eight hundred fifty-six thousand, twenty-seven".