20086851 has 4 divisors (see below), whose sum is σ = 26782472. Its totient is φ = 13391232.

The previous prime is 20086849. The next prime is 20086867. The reversal of 20086851 is 15868002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20086851 - 2¹ = 20086849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20086811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3347806 + ... + 3347811.

It is an arithmetic number, because the mean of its divisors is an integer number (6695618).

Almost surely, 2^20086851 is an apocalyptic number.

20086851 is a deficient number, since it is larger than the sum of its proper divisors (6695621).

20086851 is an equidigital number, since it uses as much as digits as its factorization.

20086851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695620.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 20086851 is about 4481.8356730251. The cubic root of 20086851 is about 271.8341107486.

The spelling of 20086851 in words is "twenty million, eighty-six thousand, eight hundred fifty-one".